Optical Image Capturing Module

ABSTRACT

A six-piece optical image capturing system is disclosed. In order from an object side to an image side, the optical lens along the optical axis includes a first lens with refractive power; a second lens with refractive power; a third lens with refractive power; a fourth lens with refractive power; a fifth lens with refractive power, and a sixth lens with refractive power. At least one of the image-side surface and object-side surface of each of the six lens elements is aspheric. The optical lens of the optical image capturing system can increase aperture value and improve the imagining quality for use in compact cameras.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority from Taiwan Patent Application No.109101722 filed on Jan. 17, 2020, in the Taiwan Intellectual PropertyOffice, the content of which is hereby incorporated by reference in itsentirety for all purposes.

BACKGROUND OF THE INVENTION 1. Field of the Invention

The present invention relates to an optical image capturing system, andmore particularly to a compact optical image capturing system which canbe applied to electronic products.

2. Description of the Related Art

In recent years, with the rise of portable electronic devices havingcamera functionalities, the demand for an optical image capturing systemhas gradually been raised. The image sensing device of the ordinaryphotographing camera is commonly selected from a charge coupled device(CCD) or a complementary metal-oxide semiconductor sensor (CMOS Sensor).Also, as advanced semiconductor manufacturing technology enables theminimization of the pixel size of the image sensing device, thedevelopment of the optical image capturing system has gravitated towardsthe field of high pixels. Therefore, the requirement for high imagequality has been rapidly increasing.

The traditional optical image capturing system of a portable electronicdevice comes with different designs, including a four-lens or afive-lens design. However, the requirement for the higher pixels and therequirement for a large aperture of an end user, like functionalities ofmicro filming and night view, or the requirement of wide angle of viewof the portable electronic device have been raised, thus the opticalimage capturing system in prior arts cannot meet the requirement of thehigher order camera lens module.

Therefore, how to effectively increase quantity of incoming light of theoptical lenses, and further improve image quality for the imageformation, has become an important issue.

SUMMARY OF THE INVENTION

The aspect of embodiment of the present invention directs to an opticalimage capturing system and an optical image capturing lens which usecombination of refractive power, convex and concave surfaces ofsix-piece optical lenses (the convex or concave surface in the presentinvention denotes the change of geometrical shape of an object side oran image side of each lens with different height from an optical axis)to increase the quantity of incoming light of the optical imagecapturing system, and to improve image quality for image formation, soas to be applied to compact electronic products.

The term and the definition to the lens parameter in the embodiment ofthe present invention are shown as below for further reference.

The Lens Parameters Related to the Length or the Height

For the visible light spectrum, the present invention may select thewavelength of 555 nm as the primary reference wavelength and the basisfor the measurement of focus shift. For infrared light spectrum (700nm-1300 nm), the present invention may select the wavelength of 940 nmas the primary reference wavelength and the basis for the measurement offocus shift.

The optical image capturing system includes an image plane which isspecifically for infrared light and perpendicular to the optical axis,and the through-focus modulation transfer rate (value of MTF) at thefirst spatial frequency has a maximum value at the central of field ofview of the image plane.

The maximum height for image formation of the optical image capturingsystem is denoted by HOI. The height of the optical image capturingsystem is denoted by HOS. The distance from the object side of the firstlens to the image side of the sixth lens is denoted by InTL. Thedistance from an aperture stop (aperture) to an image plane is denotedby InS. The distance from the first lens to the second lens is denotedby In12 (instance). The central thickness of the first lens of theoptical image capturing system on the optical axis is denoted by TP1(instance).

The Lens Parameters Related to the Material

The coefficient of dispersion of the first lens in the optical imagecapturing system is denoted by NA1 (instance). The refractive index ofthe first lens is denoted by Nd1 (instance).

The Lens Parameters Related to the Angle of View

The angle of view is denoted by AF. Half of the angle of view is denotedby HAF. The major light angle is denoted by MRA.

The Lens Parameters Related to the Exit/Entrance Pupil

An entrance pupil diameter of the optical image capturing system isdenoted by HEP. The exit pupil diameter of image-side surface of thesixth lens is denoted by HXP. A maximum effective half diameter positionof any surface of single lens means the vertical height between theeffective half diameter (EHD) and the optical axis where the incidentlight of the maximum view angle of the system passes through thefarthest edge of the entrance pupil on the EHD of the surface of thelens. For example, the maximum effective half diameter position of theobject-side surface of the first lens is denoted as EHD11. The maximumeffective half diameter position of the image-side of the first lens isdenoted as EHD12. The maximum effective half diameter position of theobject-side surface of the second lens is denoted as EHD21. The maximumhalf effective half diameter position of the image-side surface of thesecond lens is denoted as EHD22. The maximum effective half diameterposition of any surfaces of the remaining lens of the optical imagecapturing system can be referred as mentioned above.

The Lens Parameters Related to the Depth

The horizontal distance parallel to an optical axis from a maximumeffective half diameter position of the object side of the sixth lens toan intersection point where the object side of the sixth lens crossesthe optical axis is denoted by InRS61 (a depth of the maximum effectivehalf diameter). The horizontal distance parallel to an optical axis froma maximum effective half diameter position the image side of the sixthlens to an intersection point where the object side of the sixth lenscrosses the optical axis on the image side of the sixth lens is denotedby InRS62 (the depth of the maximum effective half diameter). The depthsof the maximum effective half diameters (sinkage values) of object sideand image side of other lenses are denoted in a similar way.

The Lens Parameter Related to the Shape of the Lens

The critical point C is a tangent point on a surface of a specific lens.The tangent point is tangent to a plane perpendicular to the opticalaxis except that an intersection point which crosses the optical axis onthe specific surface of the lens. In accordance, the distanceperpendicular to the optical axis between a critical point CM on theobject side of the fifth lens and the optical axis is HVT51 (instance).The distance perpendicular to the optical axis between a critical pointC52 on the image side of the fifth lens and the optical axis is HVT52(instance). The distance perpendicular to the optical axis between acritical point C61 on the object side of the sixth lens and the opticalaxis is HVT61 (instance). The distance perpendicular to the optical axisbetween a critical point C62 on the image side of the sixth lens and theoptical axis is HVT62 (instance). The distances perpendicular to theoptical axis between critical points on the object side or the imageside of other lenses and the optical axis are denoted in a similar wayas described above.

The object side of the sixth lens has one inflection point IF611 whichis the first nearest to the optical axis. The sinkage value of theinflection point IF611 is denoted by SGI611. SGI611 is a horizontaldistance parallel to the optical axis, which is from an intersectionpoint where the object side of the sixth lens crosses the optical axisto the inflection point on the object side of the sixth lens that is thefirst nearest to the optical axis. The distance perpendicular to theoptical axis between the inflection point IF611 and the optical axis isHIF611 (instance). The image side of the sixth lens has one inflectionpoint IF621 which is the first nearest to the optical axis and thesinkage value of the inflection point IF621 is denoted by SGI621(instance). SGI621 is a horizontal distance parallel to the opticalaxis, which is from the intersection point where the image side of thesixth lens crosses the optical axis to the inflection point on the imageside of the sixth lens that is the first nearest to the optical axis.The distance perpendicular to the optical axis between the inflectionpoint IF621 and the optical axis is HIF621 (instance).

The object side of the sixth lens has one inflection point IF612 whichis the second nearest to the optical axis and the sinkage value of theinflection point IF612 is denoted by SGI612 (instance). SGI612 is ahorizontal distance parallel to the optical axis, which is from anintersection point where the object side of the sixth lens crosses theoptical axis to the inflection point on the object side of the sixthlens that is the second nearest to the optical axis. The distanceperpendicular to the optical axis between the inflection point IF612 andthe optical axis is HIF612 (instance). The image side of the sixth lenshas one inflection point IF622 which is the second nearest to theoptical axis and the sinkage value of the inflection point IF622 isdenoted by SGI622 (instance). SGI622 is a horizontal distance parallelto the optical axis, which is from an intersection point where the imageside of the sixth lens crosses the optical axis to the inflection pointon the image side of the sixth lens that is the second nearest to theoptical axis. The distance perpendicular to the optical axis between theinflection point IF622 and the optical axis is HIF622 (instance).

The object side of the sixth lens has one inflection point IF613 whichis the third nearest to the optical axis and the sinkage value of theinflection point IF613 is denoted by SGI613 (instance). SGI613 is ahorizontal distance parallel to the optical axis, which is from anintersection point where the object side of the sixth lens crosses theoptical axis to the inflection point on the object side of the sixthlens that is the third nearest to the optical axis. A distanceperpendicular to the optical axis between the inflection point IF613 andthe optical axis is HIF613 (instance). The image side of the sixth lenshas one inflection point IF623 which is the third nearest to the opticalaxis and the sinkage value of the inflection point IF623 is denoted bySGI623 (instance). SGI623 is a horizontal distance parallel to theoptical axis, which is from an intersection point where the image sideof the sixth lens crosses the optical axis to the inflection point onthe image side of the sixth lens that is the third nearest to theoptical axis. The distance perpendicular to the optical axis between theinflection point IF623 and the optical axis is HIF623 (instance).

The object side of the sixth lens has one inflection point IF614 whichis the fourth nearest to the optical axis and the sinkage value of theinflection point IF614 is denoted by SGI614 (instance). SGI614 is ahorizontal distance parallel to the optical axis, which is from anintersection point where the object side of the sixth lens crosses theoptical axis to the inflection point on the object side of the sixthlens that is the fourth nearest to the optical axis. The distanceperpendicular to the optical axis between the inflection point IF614 andthe optical axis is HIF614 (instance). The image side of the sixth lenshas one inflection point IF624 which is the fourth nearest to theoptical axis and the sinkage value of the inflection point IF624 isdenoted by SGI624 (instance). SGI624 is a horizontal distance parallelto the optical axis, which is from an intersection point where the imageside of the sixth lens crosses the optical axis to the inflection pointon the image side of the sixth lens that is the fourth nearest to theoptical axis. The distance perpendicular to the optical axis between theinflection point IF624 and the optical axis is HIF624 (instance).

The inflection points on the object sides or the image side of the otherlenses and the distances perpendicular to the optical axis thereof orthe sinkage values thereof are denoted in a similar way described above.

The Lens Parameters Related to the Aberration

Optical distortion for image formation in the optical image capturingsystem is denoted by ODT. TV distortion for image formation in theoptical image capturing system is denoted by TDT. Further, the degree ofaberration offset within a range of 50% to 100% of the field of view ofthe image can be further limited. An offset of the spherical aberrationis denoted by DFS. An offset of the coma aberration is denoted by DFC.

The characteristic diagram of modulation transfer function of theoptical image capturing system is used for testing and evaluating thecontrast ratio and the sharpness ratio of the image. The verticalcoordinate axis of the characteristic diagram of modulation transferfunction indicates a contrast transfer rate (with values from 0 to 1).The horizontal coordinate axis indicates a spatial frequency (cycles/mm;lp/mm; line pairs per mm). Theoretically, an ideal image capturingsystem can clearly and distinctly show the line contrast of aphotographed object. However, the values of the contrast transfer rateat the vertical coordinate axis are smaller than 1 in the actual opticalimage capturing system. In addition, to achieve a fine degree ofrecovery in the edge region of the image is generally more difficultthan in the central region of the image. The contrast transfer rates(MTF values) with spatial frequencies of 55 cycles/mm at the opticalaxis, 0.3 field of view and 0.7 field of view of infrared light spectrumon the image plane may be expressed respectively as MTFE0 MTFE3 andMTFE7. The contrast transfer rates (MTF values) with spatial frequenciesof 110 cycles/mm at the optical axis, 0.3 field of view, and 0.7 fieldof view of infrared light spectrum on the image plane may berespectively expressed as MTFQ0, MTFQ3 and MTFQ7. The contrast transferrates (MTF values) with spatial frequencies of 220 cycles/mm at theoptical axis, 0.3 field of view, and 0.7 field of view of visible lightspectrum on the image plane may be respectively expressed as MTFH0,MTFH3 and MTFH7. The contrast transfer rates (MTF values) with spatialfrequencies of 440 cycles/mm at the optical axis, 0.3 field of view, and0.7 field of view of visible light spectrum on the image plane may berespectively expressed as MTF0, MTF3 and MTF7. The three fields of viewdescribed above are representative to the center, the internal field ofview and the external field of view of the lens. Therefore, the threefields of view described above may be used to evaluate whether theperformance of the specific optical image capturing system is excellent.If the design of the optical image capturing system corresponds to asensing device which pixel size is below and equal to 1.12 micrometers,the quarter spatial frequencies, the half spatial frequencies (halffrequencies) and the full spatial frequencies (full frequencies) of thecharacteristic diagram of modulation transfer function are respectivelyat least 110 cycles/mm, 220 cycles/mm and 440 cycles/mm.

If an optical image capturing system needs to satisfy conditions withimages of the infrared spectrum and the visible spectrum simultaneously,such as the requirements for night vision in low light, the usedwavelength may be 840 nm or 960 nm. Since the main function is torecognize the shape of an object formed in a black-and-whiteenvironment, high resolution is unnecessary and thus the spatialfrequency which is less than 110 cycles/mm may be selected to evaluatethe performance of the specific optical image capturing system on theinfrared light spectrum. When the operation wavelength 940 nm is focusedon the image plane, the contrast transfer rates (MTF values) with aspatial frequency of 55 cycles/mm where the images are at the opticalaxis, 0.3 field of view and 0.7 field of view may be respectivelyexpressed as MTFE0, MTFE3 and MTFE7.

The present invention provides an optical image capturing system, anobject side or an image side of the sixth lens may have inflectionpoints, such that the angle of incidence from each field of view to thesixth lens can be adjusted effectively and the optical distortion andthe TV distortion can be corrected as well. Furthermore, the surfaces ofthe sixth lens may have a better optical path adjusting ability toacquire better image quality.

The present invention provides an optical image capturing system, froman object side to an image side, comprising a first lens with refractivepower, a second lens with refractive power, a third lens with refractivepower, a fourth lens with refractive power, a fifth lens with refractivepower, a sixth lens with refractive power, and an image plane forinfrared light. Focal lengths of the first lens through the sixth lensare f1, f2, f3, f4, f5 and f6, respectively, and a focal length of theoptical image capturing system is f, the entrance pupil diameter of theoptical image capturing system is denoted by HEP, the exit pupildiameter of image side of the sixth lens is denoted by HXP, a distanceon an optical axis from an object side of the first lens to the imageplane is denoted by HOS, a half maximum angle of view of the opticalimage capturing system is denoted by HAF, a maximum height for imageformation on the image plane perpendicular to an optical axis in theoptical image capturing system is HOI, thicknesses of the first lens tothe sixth lens at height of ½ HXP parallel to the optical axis arerespectively denoted by ETP1, ETP2, ETP3, ETP4, ETP5 and ETP6, a sum ofETP1 to ETP6 described above is denoted by SETP, thicknesses of thefirst lens to the sixth lens on the optical axis are respectivelydenoted by TP1, TP2, TP3, TP4, TP5 and TP6, a sum of TP1 to TP6described above is denoted by STP, and the following conditions aresatisfied: 0.5≤f/HEP≤1.8; 0 deg<HAF≤50 deg; and 0.2≤SETP/STP<1.

The present invention provides an optical image capturing system, froman object side to an image side, comprising a first lens, a second lens,a third lens, a fourth lens, a fifth lens, a sixth lens, and an imageplane for infrared light. At least one surface of at least one of thesix lenses has at least one inflection point, focal lengths of the firstlens through the sixth lens are f1, f2, f3, f4, f5 and f6, respectively,and a focal length of the optical image capturing system is f, theentrance pupil diameter of the optical image capturing system is denotedby HEP, the exit pupil diameter of image side of the sixth lens isdenoted by HXP, a distance on the optical axis from an object side ofthe first lens to the image plane is denoted by HOS, a distance on theoptical axis from the object side of the first lens to the image side ofthe sixth lens is denoted by InTL, a half maximum angle of view of theoptical image capturing system is denoted by HAF, a horizontal distanceparallel to the optical axis from a first coordinate point on the objectside of the first lens at height of ½ HXP to the image plane is denotedby ETL, a horizontal distance parallel to the optical axis from thefirst coordinate point on the object side of the first lens at height of½ HXP to a second coordinate point on the image side of the sixth lensat height of ½ HXP is denoted by EIN, and the following conditions aresatisfied: 0.5≤f/HEP≤1.5; 0 deg<HAF≤50 deg; and 0.2≤EIN/ETL<1.

The present invention provides an optical image capturing system, froman object side to an image side, comprising a first lens, a second lens,a third lens, a fourth lens, a fifth lens, a sixth lens, and an imageplane for infrared light. The optical image capturing system comprisesthe six lenses with refractive power, at least one surface of each of atleast two lenses of the six lenses has at least one inflection point, amaximum height for image formation on the image plane perpendicular toan optical axis in the optical image capturing system is HOI, theentrance pupil diameter of the optical image capturing system is denotedby HEP, the exit pupil diameter of image side of the sixth lens isdenoted by HXP, a half maximum angle of view of the optical imagecapturing system is denoted by HAF, thicknesses of the first lens to thesixth lens at height of ½ HEP parallel to the optical axis arerespectively denoted by ETP1, ETP2, ETP3, ETP4, ETP5 and ETP6, a sum ofETP1 to ETP6 described above is denoted by SETP, thicknesses of thefirst lens to the sixth lens on the optical axis are respectivelydenoted by TP1, TP2, TP3, TP4, TP5 and TP6, a sum of TP1 to TP6described above is denoted by STP, and the following conditions aresatisfied: 0.5≤f/HEP≤1.3; 0 deg<HAF≤45 deg; and 0.2≤SETP/STP<1.

The thickness of a single lens at a height of ½ entrance pupil diameter(HEP) particularly affects the corrected aberration of common area ofeach field of view of light and the capability of correcting the opticalpath difference between each field of view of light in the scope of ½entrance pupil diameter (HEP). The capability of aberration correctionis enhanced if the thickness of the lens becomes greater, but thedifficulty for manufacturing is also increased at the same time.Therefore, the thickness of a single lens at the height of ½ entrancepupil diameter (HEP) needs to be controlled. The ratio relationship(ETP/TP) between the thickness (ETP) of the lens at a height of ½entrance pupil diameter (HEP) and the thickness (TP) of the lens on theoptical axis needs to be controlled in particular. For example, thethickness of the first lens at a height of ½ entrance pupil diameter(HEP) may be expressed as ETP1. The thickness of the second lens at aheight of ½ entrance pupil diameter (HEP) may be expressed as ETP2. Thethicknesses of other lenses at a height of ½ entrance pupil diameter(HEP) in the optical image capturing system are expressed in a similarway. The sum of ETP1 to ETP4 described above may be expressed as SETP.The embodiments of the present invention may satisfy the followingrelationship: 0.3≤SETP/EIN<1.

In order to achieve a balance between enhancing the capability ofaberration correction and reducing the difficulty for manufacturing, theratio relationship (ETP/TP) between the thickness (ETP) of the lens atthe height of ½ entrance pupil diameter (HEP) and the thickness (TP) ofthe lens on the optical axis needs to be controlled in particular. Forexample, the thickness of the first lens at the height of ½ entrancepupil diameter (HEP) may be expressed as ETP1. The thickness of thefirst lens on the optical axis may be expressed as TP1. The ratiobetween ETP1 and TP1 may be expressed as ETP1/TP1. The thickness of thesecond lens at the height of ½ entrance pupil diameter (HEP) may beexpressed as ETP2. The thickness of the second lens on the optical axismay be expressed as TP2. The ratio between ETP2 and TP2 may be expressedas ETP2/TP2. The ratio relationships between the thicknesses of otherlenses at height of ½ entrance pupil diameter (HEP) and the thicknesses(TP) of the lens on the optical axis lens in the optical image capturingsystem are expressed in a similar way. The embodiments of the presentinvention may satisfy the following relationship: 0.2≤ETP/TP≤3.

The horizontal distance between two adjacent lenses at height of ½entrance pupil diameter (HEP) may be expressed as ED. The horizontaldistance (ED) described above is parallel to the optical axis of theoptical image capturing system and particularly affects the correctedaberration of common area of each field of view of light and thecapability of correcting the optical path difference between each fieldof view of light at the position of ½ entrance pupil diameter (HEP). Thecapability of aberration correction may be enhanced if the horizontaldistance becomes greater, but the difficulty for manufacturing is alsoincreased and the degree of ‘miniaturization’ to the length of theoptical image capturing system is restricted. Therefore, the horizontaldistance (ED) between two specific adjacent lens at the height of ½entrance pupil diameter (HEP) must be controlled.

In order to achieve a balance between enhancing the capability ofcorrecting aberration and reducing the difficulty for ‘minimization’ tothe length of the optical image capturing system, the ratio relationship(ED/IN) of the horizontal distance (ED) between the two adjacent lensesat height of ½ entrance pupil diameter (HEP) to the horizontal distance(IN) between the two adjacent lenses on the optical axis particularlyneeds to be controlled. For example, the horizontal distance between thefirst lens and the second lens at height of ½ entrance pupil diameter(HEP) may be expressed as ED12. The horizontal distance on the opticalaxis between the first lens and the second lens may be expressed asIN12. The ratio between ED12 and IN12 may be expressed as ED12/IN12. Thehorizontal distance between the second lens and the third lens at heightof ½ entrance pupil diameter (HEP) may be expressed as ED23. Thehorizontal distance on the optical axis between the second lens and thethird lens may be expressed as IN23. The ratio between ED23 and IN23 maybe expressed as ED23/IN23. The ratio relationships of the horizontaldistances between other two adjacent lenses in the optical imagecapturing system at height of ½ entrance pupil diameter (HEP) to thehorizontal distances on the optical axis between the two adjacent lensesare expressed in a similar way.

The horizontal distance parallel to the optical axis from a coordinatepoint on the image side of the sixth lens at height ½ HEP to the imageplane may be expressed as EBL. The horizontal distance parallel to theoptical axis from an intersection point where the image side of thesixth lens crosses the optical axis to the image plane may be expressedas BL. The embodiments of the present invention are able to achieve abalance between enhancing the capability of aberration correction andreserving space to accommodate other optical lenses and the followingcondition may be satisfied: 0.2≤EBL/BL≤1.1. The optical image capturingsystem may further include a light filtering element. The lightfiltering is located between the sixth lens and the image plane. Thedistance parallel to the optical axis from a coordinate point on theimage side of the sixth lens at height of ½ HEP to the light filteringmay be expressed as EIR. The distance parallel to the optical axis froman intersection point where the image side of the sixth lens crosses theoptical axis to the light filtering may be expressed as PIR. Theembodiments of the present invention may satisfy the followingcondition: 0.1≤EIR/PIR≤1.1.

The height of optical system (HOS) may be reduced to achieve theminimization of the optical image capturing system when the absolutevalue of f1 is larger than f6(|f1|>|f6|).

When |f2|+|f3|+|f4|+|f5| and |f1|+|f6| meet the aforementionedconditions, at least one lens among the second lens to the fifth lensmay have a weak positive refractive power or a weak negative refractivepower. The weak refractive power indicates that an absolute value of thefocal length of a specific lens is greater than 10. When at least onelens among the second lens to the fifth lens has the weak positiverefractive power, the positive refractive power of the first lens can beshared by this configuration, such that the unnecessary aberration willnot appear too early. On the contrary, when at least one lens among thesecond lens to the fifth lens has the weak negative refractive power,the aberration of the optical image capturing system can be slightlycorrected.

Besides, the sixth lens may have negative refractive power, and theimage side thereof may be a concave surface. Hereby, this configurationis beneficial to shorten the back focal length of the optical imagecapturing system so as to keep the optical image capturing systemminimized. Moreover, at least one surface of the sixth lens may possessat least one inflection point, which is capable of effectively reducingthe incident angle of the off-axis rays, thereby further correcting theoff-axis aberration.

BRIEF DESCRIPTION OF THE DRAWINGS

The detailed structure, operating principle and effects of the presentinvention will now be described in more details hereinafter withreference to the accompanying drawings that show various embodiments ofthe present invention as follows.

FIG. 1A is a schematic view of the optical image capturing systemaccording to the first embodiment of the present invention.

FIG. 1B is a curve diagram illustrating the spherical aberration,astigmatism and optical distortion of the optical image capturing systemin order from left to right according to the first embodiment of thepresent invention.

FIG. 1C is a characteristic diagram of modulation transfer of visiblelight spectrum for the optical image capturing system according to thefirst embodiment of the present invention.

FIG. 2A is a schematic view of the optical image capturing systemaccording to the second embodiment of the present invention.

FIG. 2B is a curve diagram illustrating the spherical aberration,astigmatism and optical distortion of the optical image capturing systemin order from left to right according to the second embodiment of thepresent invention.

FIG. 2C is a characteristic diagram of modulation transfer of infraredlight spectrum for the optical image capturing system according to thesecond embodiment of the present invention.

FIG. 3A is a schematic view of the optical image capturing systemaccording to the third embodiment of the present invention.

FIG. 3B is a curve diagram illustrating the spherical aberration,astigmatism and optical distortion of the optical image capturing systemin order from left to right according to the third embodiment of thepresent invention.

FIG. 3C is a characteristic diagram of modulation transfer of infraredlight spectrum for the optical image capturing system according to thethird embodiment of the present invention.

FIG. 4A is a schematic view of the optical image capturing systemaccording to the fourth embodiment of the present invention.

FIG. 4B is a curve diagram illustrating the spherical aberration,astigmatism and optical distortion of the optical image capturing systemin order from left to right according to the fourth embodiment of thepresent invention.

FIG. 4C is a characteristic diagram of modulation transfer of infraredlight spectrum for the optical image capturing system according to thefourth embodiment of the present invention.

FIG. 5A is a schematic view of the optical image capturing systemaccording to the fifth embodiment of the present invention.

FIG. 5B is a curve diagram illustrating the spherical aberration,astigmatism and optical distortion of the optical image capturing systemin order from left to right according to the fifth embodiment of thepresent invention.

FIG. 5C is a characteristic diagram of modulation transfer of infraredlight spectrum for the optical image capturing system according to thefifth embodiment of the present invention.

FIG. 6A is a schematic view of the optical image capturing systemaccording to the sixth embodiment of the present invention.

FIG. 6B is a curve diagram illustrating the spherical aberration,astigmatism and optical distortion of the optical image capturing systemin order from left to right according to the sixth embodiment of thepresent invention.

FIG. 6C is a characteristic diagram of modulation transfer of infraredlight spectrum for the optical image capturing system according to thesixth embodiment of the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

The advantages, features, and technical methods of the present inventionare to be explained in detail with reference to the exemplaryembodiments and the figures for the purpose of being more easily to beunderstood. Moreover, the present invention may be realized in differentforms, and should not be construed as being limited to the embodimentsset forth herein. Conversely, for a person skilled in the art, theembodiments provided shall make the present invention convey the scopemore thoroughly, comprehensively, and completely. In addition, thepresent invention shall be defined only by the appended claims.

An optical image capturing system is provided, which includes, in theorder from the object side to the image side, a first lens, a secondlens, a third lens, a fourth lens, a fifth lens, a sixth lens, and animage plane. The optical image capturing system may further include animage sensing device, which is disposed on the image plane.

The optical image capturing system may use three sets of infrared lightwavelengths which are respectively 850 nm, 940 nm and 960 nm, wherein960 nm is served as the primary reference wavelength and a referencewavelength for retrieving technical features.

The optical image capturing system may use three sets of visible lightwavelengths which are respectively 486.1 nm, 587.5 nm and 656.2 nm,wherein 587.5 nm is served as the primary reference wavelength and areference wavelength for retrieving technical features. The opticalimage capturing system may also use five sets of wavelengths which arerespectively 470 nm, 510 nm, 555 nm, 610 nm and 650 nm, wherein 555 nmis served as the primary reference wavelength and a reference wavelengthfor retrieving technical features.

The ratio of the focal length f of the optical image capturing system toa focal length fp of each of lenses with positive refractive power isdenoted by PPR. The ratio of the focal length f of the optical imagecapturing system to a focal length fn of each of lenses with negativerefractive power is denoted by NPR. The sum of the PPR of all lenseswith positive refractive power is ΣPPR. The sum of the NPR of all lenseswith negative refractive power is ΣNPR. The control of the totalrefractive power and the total length of the optical image capturingsystem is favorable when following conditions are satisfied:0.5≤ΣPPR/|ΣNPR|≤15. Preferably, the following relationship is satisfied:1≤ΣPPR/|ΣNPR|≤3.0.

The optical image capturing system may further include an image sensingdevice which is disposed on an image plane. A half of a diagonal of aneffective detection field of the image sensing device (imaging height orthe maximum image height of the optical image capturing system) is HOI.The distance on the optical axis from the object side of the first lensto the image plane is HOS. The following relationships are satisfied:HOS/HOI≤50 and 0.5≤HOS/f≤150. Preferably, the following relationships issatisfied: 1≤HOS/HOI≤40 and 1≤HOS/f≤140. Hereby, the miniaturization ofthe optical image capturing system can be maintained effectively, so asto be carried by lightweight portable electronic devices.

In addition, in the optical image capturing system of the presentinvention, according to different requirements, at least one aperturemay be arranged for reducing stray light and improving the imagequality.

Specifically, the disposition of the aperture may be a front aperture ora middle aperture in the optical image capturing module in the presentinvention. The front aperture is the aperture disposed between the shotobject and the first lens. The middle aperture is the aperture disposedbetween the first lens and the image plane. If the aperture is the frontaperture, a longer distance may be created between the exit pupil andthe image plane in the optical image capturing module, so that moreoptical elements may be accommodated and the efficiency of image sensorelements receiving images may be increased. If the aperture is themiddle aperture, the field of view of the system may be expended in sucha way that the optical image capturing module has the advantages of awide-angle lens. InS is defined as the distance from the aforementionedaperture to the image plane, which satisfies the following condition:0.1≤InS/HOS≤1.1. Therefore, the features of the optical image capturingmodule maintained in miniaturization and having wide-angle may beattended simultaneously.

In the optical image capturing system of the present invention, thedistance from the object side of the first lens to the image side of thesixth lens is InTL. A total central thickness of all lenses withrefractive power on the optical axis is ΣTP. The following relationshipis satisfied: 0.1≤ΣTP/InTL≤0.9. Hereby, the contrast ratio for the imageformation in the optical image capturing system and yield rate formanufacturing the lens can be given consideration simultaneously, and aproper back focal length is provided to dispose other optical componentsin the optical image capturing system.

The curvature radius of the object side of the first lens is R1. Thecurvature radius of the image side of the first lens is R2. Thefollowing relationship is satisfied: 0.001≤|R1/R2|≤25. Hereby, the firstlens may have proper strength of the positive refractive power, so as toavoid the longitudinal spherical aberration from increasing too fast.Preferably, the following relationship may be satisfied: 0.01≤|R1/R2<12.

The curvature radius of the object side of the sixth lens is R11. Thecurvature radius of the image side of the sixth lens is R12. Thefollowing relationship is satisfied: −7<(R11−R12)/(R11+R12)<50. Hereby,the astigmatism generated by the optical image capturing system can becorrected beneficially.

The distance between the first lens and the second lens on the opticalaxis is IN12. The following relationship is satisfied: IN12/f≤60.Hereby, the chromatic aberration of the lenses can be improved, suchthat the performance can be increased.

The distance between the fifth lens and the sixth lens on the opticalaxis is IN56. The following relationship is satisfied: IN56/f≤3.0.Hereby, the chromatic aberration of the lenses can be improved, suchthat the performance can be increased.

Central thicknesses of the first lens and the second lens on the opticalaxis are respectively denoted by TP1 and TP2. The following condition issatisfied: 0.1≤(TP1+IN12)/TP2≤10.Hereby, the sensitivity produced by theoptical image capturing system can be controlled, and the performancecan be increased.

Central thicknesses of the fifth lens and the sixth lens on the opticalaxis are respectively denoted by TP5 and TP6, and a distance between theaforementioned two lenses on the optical axis is IN56. The followingcondition is satisfied: 0.1≤(TP6+IN56)/TP5≤15. Hereby, the sensitivityproduced by the optical image capturing system can be controlled and thetotal height of the optical image capturing system can be reduced.

Central thicknesses of the second lens, the third lens and the fourthlens on the optical axis are respectively denoted by TP2, TP3 and TP4.The distance between the second lens and the third lens on the opticalaxis is IN23. A distance between the third lens and the forth lens onthe optical axis is IN34. A distance between the fourth lens and thefifth lens on the optical axis is IN45. The distance between an objectside of the first lens and an image side of the sixth lens is InTL. Thefollowing relationship is satisfied: TP4/(IN34+TP4+IN45)<1. Hereby, thisconfiguration is helpful to slightly correct the aberration of thepropagating process of the incident light layer by layer, and decreasethe total height of the optical image capturing system.

In the optical image capturing system of the first embodiment, adistance perpendicular to the optical axis between a critical point C61on an object side of the sixth lens and the optical axis is HVT61. Thedistance perpendicular to the optical axis between a critical point C62on an image side of the sixth lens and the optical axis is HVT62. Thehorizontal distance parallel to the optical axis from an intersectionpoint where the object side of the sixth lens crosses the optical axisto the critical point C61 may be expressed as SGC61. The horizontaldistance parallel to the optical axis from an intersection point wherethe image side of the sixth lens crosses the optical axis to thecritical point C62 may be expressed as SGC62. The followingrelationships may be satisfied: 0 mm≤HVT61≤3 mm, 0 mm<HVT62≤6 mm,0≤HVT61/HVT62, 0 mm≤|SGC61|≤0.5 mm; 0 mm <SGC62|≤2 mm and0<SGC62|/(|SGC62|+TP6)≤0.9. Hereby, the aberration of the off-axis fieldof view can be corrected effectively.

The following relationship is satisfied for the optical image capturingsystem of the present invention: 0.2≤HVT62/HOI≤0.9. Preferably, thefollowing relationship may be satisfied: 0.3≤HVT62/HOI≤0.8. Hereby, theaberration at surrounding field of view for the optical image capturingsystem can be corrected beneficially.

The following relationship is satisfied for the optical image capturingsystem of the present invention: 0≤HVT62/HOS≤0.5. Preferably, thefollowing relationship may be satisfied: 0.2≤HVT62/HOS≤0.45. Hereby, theaberration at surrounding field of view for the optical image capturingsystem can be corrected beneficially.

In the optical image capturing system of the present invention, thehorizontal distance parallel to an optical axis from an inflection pointon the object side of the sixth lens which is the first nearest to theoptical axis to an intersection point where the object side of the sixthlens crosses the optical axis is denoted by SGI611. The horizontaldistance parallel to an optical axis from an inflection point on theimage side of the sixth lens which is the first nearest to the opticalaxis to an intersection point where the image side of the sixth lenscrosses the optical axis is denoted by SGI621. The followingrelationships may be satisfied: 0<SGI611/(SGI611+TP6)≤0.9 and0<SGI621/(SGI621+TP6)≤0.9. Preferably, the following relationships maybe satisfied: 0.1SGI611/(SGI611+TP6)≤0.6 and0.1≤SGI621/(SGI621+TP6)≤0.6.

The horizontal distance parallel to the optical axis from the inflectionpoint on the object side of the sixth lens which is the second nearestto the optical axis to an intersection point where the object side ofthe sixth lens crosses the optical axis is denoted by SGI612. Thehorizontal distance parallel to an optical axis from an inflection pointon the image side of the sixth lens which is the second nearest to theoptical axis to an intersection point where the image side of the sixthlens crosses the optical axis is denoted by SGI622. The followingrelationships may be satisfied: 0<SGI612/(SGI612+TP6)≤0.9 and0<SGI622/(SGI622+TP6)≤0.9. Preferably, the following relationships maybe satisfied: 0.1≤SGI612/(SGI612+TP6)≤0.6 and0.1≤SGI622/(SGI622+TP6)≤0.6.

The distance perpendicular to the optical axis between the inflectionpoint on the object side of the sixth lens which is the first nearest tothe optical axis and the optical axis is denoted by HIF611. The distanceperpendicular to the optical axis between an intersection point wherethe image side of the sixth lens crosses the optical axis and aninflection point on the image side of the sixth lens which is the firstnearest to the optical axis is denoted by HIF621. The followingrelationships may be satisfied: 0.001 mm≤|HIF611|≤5 mm and 0.001mm≤|HIF621|≤5 mm. Preferably, the following relationships may besatisfied: 0.1 mm≤|HIF611|≤3.5 mm and 1.5 mm≤|HIF621|≤3.5 mm.

The distance perpendicular to the optical axis between the inflectionpoint on the object side of the sixth lens which is the second nearestto the optical axis and the optical axis is denoted by HIF612. Thedistance perpendicular to the optical axis between an intersection pointwhere the image side of the sixth lens crosses the optical axis and aninflection point on the image side of the sixth lens which is the secondnearest to the optical axis is denoted by HIF622. The followingrelationships may be satisfied: 0.001 mm≤|HIF612|≤5 mm and 0.001mm|HIF622|≤15 mm. Preferably, the following relationships may besatisfied: 0.1 mm≤|HIF622|≤3.5 mm and 0.1 mm≤|HIF612|≤3.5 mm.

The distance perpendicular to the optical axis between the inflectionpoint on the object side of the sixth lens which is the third nearest tothe optical axis and the optical axis is denoted by HIF613. The distanceperpendicular to the optical axis between an intersection point wherethe image side of the sixth lens crosses the optical axis and aninflection point on the image side of the sixth lens which is the thirdnearest to the optical axis is denoted by HIF623. The followingrelationships are satisfied: 0.001 mm≤|HIF613|≤5 mm and 0.001mm≤|HIF623|≤5 mm. Preferably, the following relationships may besatisfied: 0.1 mm≤|HIF623|≤3.5 mm and 0.1 mm≤|HIF613|≤3.5 mm.

The distance perpendicular to the optical axis between the inflectionpoint on the object side of the sixth lens which is the fourth nearestto the optical axis and the optical axis is denoted by HIF614. Thedistance perpendicular to the optical axis between an intersection pointwhere the image side of the sixth lens crosses the optical axis and aninflection point on the image side of the sixth lens which is the fourthnearest to the optical axis is denoted by HIF624. The followingrelationships are satisfied: 0.001 mm≤|HIF614|≤5 mm and 0.001 mm≤|HIF624|≤5 mm. Preferably, the following relationships may besatisfied: 0.1 mm≤|HIF624|≤3.5 mm and 0.1 mm≤|HIF614|≤3.5 mm.

In one embodiment of the optical image capturing system of the presentinvention, the chromatic aberration of the optical image capturingsystem can be corrected by alternatively arranging the lenses with largecoefficient of dispersion and small coefficient of dispersion.

The equation for the aspheric surface as mentioned above is:

z=ch ²/[1+[1(k+1)c ² h ²]^(0.5) ]+A4h ⁴ +A6h ⁶ +A8h ⁸ +A10h ¹⁰ A12h ¹²A14h ¹⁴ A16h ¹⁶ +A18h ¹⁸ +A20h ²⁰+  (1)

wherein, z is the position value of the position along the optical axisat the height h where the surface apex is regarded as a reference; k isthe conic coefficient; c is the reciprocal of curvature radius; and A4,A6, A8, A10, A12, A14, A16, A18, and A20 are high order asphericcoefficients.

In the optical image capturing module provided by the presentdisclosure, the material of the lens may be made of glass or plastic.Using plastic as the material for producing the lens may effectivelyreduce the cost of manufacturing. In addition, using glass as thematerial for producing the lens may control the heat effect and increasethe designed space configured by the refractive power of the opticalimage capturing module. Moreover, the object side surface and the imageside surface from the first lens to the sixth lens may be aspheric,which may obtain more control variables. Apart from eliminating theaberration, the number of lenses used may be reduced compared with thatof traditional lenses used made by glass. Thus, the total height of theoptical image capturing module may be reduced effectively.

Furthermore, in the optical image capturing system provided by thepresent invention, when the surface of the lens is a convex surface, thesurface of the lens adjacent to the optical axis is convex in principle,and when the surface of the lens is a concave surface, the surface ofthe lens adjacent to the optical axis is concave in principle.

The optical image capturing system of the present invention can beapplied to the optical image capturing system with automatic focus basedon the demand and has the characteristics of good aberration correctionand good image quality. Thereby, the optical image capturing systemexpands the application aspect.

The optical image capturing system of the present invention can furtherinclude a driving module based on the demand. The driving module may becoupled with the lens and enable the movement of the lens. The foregoingdriving module may be the voice coil motor (VCM) which is applied tomove the lens to focus, or may be the optical image stabilization (OIS)which is applied to reduce the frequency which lead to the out focus dueto the vibration of the camera lens in the shooting process.

At least one of the first lens, the second lens, the third lens, thefourth lens, the fifth lens and the sixth lens of the optical imagecapturing system of the present invention may further be designed as alight filtering element with a wavelength of less than 500 nm based onthe demand. The light filtering element may be made by coating film onat least one surface of that lens with certain filtering function, orforming that lens with material that can filter light with shortwavelength.

The image plane of the optical image capturing system of the presentinvention may be a plane or a curved surface based on the designrequirements. When the image plane is a curved surface (e.g. a sphericalsurface with curvature radius), the decrease of the required incidentangle to focus rays on the image plane is helpful. In addition to theaid of the miniaturization of the length of the optical image capturingsystem (TTL), this configuration is helpful to elevate the relativeillumination at the same time.

The optical imaging system of the present invention can be applied tocapture stereo image. The light with specific characteristics can beprojected onto an object, reflected by the surface of the object, andthen received and calculated by the lens of the optical imaging system,so as to obtain the distance between each position of the object and thelens, and then determine the information of the stereo image. At leastone IR-cut filter can be used reduce interference for of the projectedlight in specific spectrum, to achieve more accurate measurements. Theabove-mentioned 3D sensing method of capturing stereo image may employtechnology such as time-of-flight (TOF) or structured light, but thepresent invention is not limited thereto.

According to the above embodiments, the specific embodiments withfigures are presented in detail as below.

First Embodiment

Please refer to FIGS. 1A to 1C. FIG. 1A is a schematic view of theoptical image capturing system according to the first embodiment of thepresent invention. FIG. 1B is a curve diagram illustrating the sphericalaberration, astigmatism and optical distortion of the optical imagecapturing system in order from left to right according to the firstembodiment of the present invention. FIG. 1C is a characteristic diagramof modulation transfer of visible light spectrum for the optical imagecapturing system according to the first embodiment of the presentinvention. As shown in FIG. 1A, an optical image capturing systemincludes, in the order from the object side to the image side, a firstlens 110, an aperture 100, a second lens 120, a third lens 130, a fourthlens 140, a fifth lens 150, a sixth lens 160, an IR-cut filter 180, animage plane 190, and an image sensor element 192.

The first lens 110 has negative refractive power and is made of plastic.The object side 112 of the first lens 110 is a concave surface and theimage side 114 of the first lens 110 is a concave surface, and theobject side 112 and the image side 114 of are aspheric. The object side112 has two inflection points. The thickness of the first lens on theoptical axis is denoted by TP1. The thickness of the first lens at aheight of ½ entrance pupil diameter (HEP) is denoted by ETP1.

SGI111 denotes a distance parallel to the optical axis from theinflection point on the object side surface of the first lens which isthe nearest to the optical axis to an axial point on the object sidesurface of the first lens. SGI121 denotes a distance parallel to anoptical axis from an inflection point on the image side surface of thefirst lens which is the nearest to the optical axis to an axial point onthe image side surface of the first lens. The following conditions aresatisfied: SGI111=−0.0031 mm; and |SGI111|/(|SGI111|+TP1_=0.0016.

SGI112 denotes the distance parallel to the optical axis from theinflection point on the object side surface of the first lens which isthe second nearest to the optical axis to an axial point on the objectside surface of the first lens. SGI122 denotes the distance parallel toan optical axis from an inflection point on the image side surface ofthe first lens which is the second nearest to the optical axis to anaxial point on the image side surface of the first lens. The followingconditions are satisfied: SGI112=1.3178 mm;|SGI112|/(|SGI112|+TP1)=0.4052.

HIF111 denotes the distance perpendicular to the optical axis betweenthe inflection point on the object side surface of the first lens whichis the nearest to the optical axis and the optical axis. HIF121 denotesthe distance perpendicular to the optical axis between an axial point onthe image side surface of the first lens and an inflection point on theimage side surface of the first lens which is the nearest to the opticalaxis. The following conditions are satisfied: HIF111=0.5557 mm;HIF111/HOI=0.1111.

HIF112 denotes the distance perpendicular to the optical axis betweenthe inflection point on the object side surface of the first lens whichis the second nearest to the optical axis and the optical axis. HIF122denotes the distance perpendicular to the optical axis between an axialpoint on the image side surface of the first lens and an inflectionpoint on the image side surface of the first lens which is the secondnearest to the optical axis. The following conditions are satisfied:HIF112=5.3732 mm; HIF112/HOI=1.0746.

The second lens 120 has positive refractive power and is made ofplastic. The object side 122 of the second lens 120 is a convex surfaceand the image side 124 of the second lens 120 is a convex surface, andthe object side 122 and the image side 124 are aspheric. The object side122 has one inflection point. The thickness of the second lens on theoptical axis is denoted by TP2. The thickness of the second lens at aheight of ½ entrance pupil diameter (HEP) is denoted by ETP2.

The horizontal distance parallel to the optical axis from an inflectionpoint on the object side of the second lens that is the first nearest tothe optical axis to the intersection point where the object side of thesecond lens crosses the optical axis is denoted by SGI211. Thehorizontal distance parallel to the optical axis from an inflectionpoint on the image side of the second lens that is the first nearest tothe optical axis to the intersection point where the image side of thesecond lens crosses the optical axis is denoted by SGI221. The followingconditions are satisfied: SGI211=0.1069 mm,|SGI211|/(|SGI211|+TP2)=0.0412, SGI221=0 mm and|SGI221|/(|SGI221|+TP2)=0.

The perpendicular distance from the inflection point on the object sideof the second lens that is the first nearest to the optical axis to theoptical axis is denoted by HIF211. The distance perpendicular to theoptical axis from the inflection point on the image side of the secondlens that is the first nearest to the optical axis to the intersectionpoint where the image side of the second lens crosses the optical axisis denoted by HIF221. The following conditions are satisfied:HIF211=1.1264 mm, HIF211/HOI=0.2253, HIF221=0 mm and HIF221/HOI=0.

The third lens 130 has negative refractive power and is made of plastic.An object side 132 of the third lens 130 is a concave surface and animage side 134 of the third lens 130 is a convex surface, and the objectside 132 and the image side 134 are both aspheric. The object side 132has one inflection point, and the image side 134 has one inflectionpoint. The thickness of the third lens on the optical axis is denoted byTP3. The thickness of the third lens at a height of ½ entrance pupildiameter (HEP) is denoted by ETP3.

The distance parallel to the optical axis from an inflection point onthe object side of the third lens that is the first nearest to theoptical axis to an intersection point where the object side of the thirdlens crosses the optical axis is denoted by SGI311. The distanceparallel to the optical axis from an inflection point on the image sideof the third lens that is the first nearest to the optical axis to anintersection point where the image side of the third lens crosses theoptical axis is denoted by SGI321. The following conditions aresatisfied: SGI311=−0.3041 mm, |SGI311|(|SGI311|+TP3)=−0.1172, and|SGI321|/(|SGI321|+TP3)=0.2357.

The perpendicular distance between the inflection point on the objectside of the third lens that is the first nearest to the optical axis andthe optical axis is denoted by HIF311. The distance perpendicular to theoptical axis between the inflection point on the image side of the thirdlens that is the first nearest to the optical axis and the intersectionpoint where the image side of the third lens crosses the optical axis isdenoted by HIF321. The following conditions are satisfied: HIF311=1.5907mm, HIF311/HOI=0.3181, HIF321=1.3380 mm and HIF321/HOI=0.2676.

The fourth lens 140 has positive refractive power and is made ofplastic. An object side 142 of the fourth lens 140 is a convex surfaceand an image side 144 of the fourth lens 140 is a concave surface, andthe object side 142 and the image side 144 of the fourth lens 140 areboth aspheric. The object side 142 has two inflection points, and theimage side 144 has one inflection point. The thickness of the fourthlens on the optical axis is denoted by TP4. The thickness of the fourthlens at a height of ½ entrance pupil diameter (HEP) is denoted by ETP4.

The horizontal distance parallel to the optical axis from an inflectionpoint on the object side of the fourth lens that is the first nearest tothe optical axis to the intersection point where the object side of thefourth lens crosses the optical axis is denoted by SGI411. Thehorizontal distance parallel to the optical axis from an inflectionpoint on the image side of the fourth lens that is the first nearest tothe optical axis to the intersection point where the image side of thefourth lens crosses the optical axis is denoted by SGI421. The followingconditions are satisfied: SGI411=0.0070 mm,|SGI411|/(|SGI411|+TP4)=0.0056, SGI421=0.0006 mm and|SGI421|/(|SGI421|+TP4)=0.0005.

The horizontal distance parallel to the optical axis from an inflectionpoint on the object side of the fourth lens that is the second nearestto the optical axis to the intersection point where the object side ofthe fourth lens crosses the optical axis is denoted by SGI412. Thehorizontal distance parallel to the optical axis from an inflectionpoint on the image side of the fourth lens that is the second nearest tothe optical axis to the intersection point where the image side of thefourth lens crosses the optical axis is denoted by SGI422. The followingconditions are satisfied: SGI412=−0.2078 mm and|SGI412|/(|SGI412|+TP4)=0.1439.

The perpendicular distance between the inflection point on the objectside of the fourth lens that is the first nearest to the optical axisand the optical axis is denoted by HIF411. The distance perpendicular tothe optical axis between the inflection point on the image side of thefourth lens that is the first nearest to the optical axis and theintersection point where the image side of the fourth lens crosses theoptical axis is denoted by HIF421. The following conditions aresatisfied: HIF411=0.4706 mm, HIF411/HOI=0.0941, HIF421=0.1721 mm andHIF421/HOI=0.0344.

The perpendicular distance between the inflection point on the objectside of the fourth lens that is the second nearest to the optical axisand the optical axis is denoted by HIF412. The distance perpendicular tothe optical axis between the inflection point on the image side of thefourth lens that is the second nearest to the optical axis and theintersection point where the image side of the fourth lens crosses theoptical axis is denoted by HIF422. The following conditions aresatisfied: HIF412=2.0421 mm and HIF412/HOI=0.4084.

The fifth lens 150 has positive refractive power and is made of plastic.An object side 152 of the fifth lens 150 is a convex surface and animage side 154 of the fifth lens 150 is a convex surface, and the objectside 152 and the image side 154 are both aspheric. The object side 152has two inflection points and the image side 154 has one inflectionpoint. The thickness of the fifth lens on the optical axis is denoted byTPS. The thickness of the fifth lens at a height of ½ entrance pupildiameter (HEP) is denoted by ETP5.

The horizontal distance parallel to the optical axis from an inflectionpoint on the object side of the fifth lens that is the first nearest tothe optical axis to the intersection point where the object side of thefifth lens crosses the optical axis is denoted by SGI511. The horizontaldistance parallel to the optical axis from an inflection point on theimage side of the fifth lens that is the first nearest to the opticalaxis to the intersection point where the image side of the fifth lenscrosses the optical axis is denoted by SGI521. The following conditionsare satisfied: SGI511=0.00364 mm, |SGI511|/(|SGI511|+TP5)=0.00338,SGI521=−0.63365 mm and |SGI521|/(|SGI521|+TP5)=0.37154.

The horizontal distance parallel to the optical axis from an inflectionpoint on the object side of the fifth lens that is the second nearest tothe optical axis to the intersection point where the object side of thefifth lens crosses the optical axis is denoted by SGI512. The horizontaldistance parallel to the optical axis from an inflection point on theimage side of the fifth lens that is second nearest to the optical axisto the intersection point where the image side of the fifth lens crossesthe optical axis is expressed as SGI522. The following conditions aresatisfied: SGI512=−0.32032 mm and |SGI512|/(|SGI512|+TP5)=0.23009.

The horizontal distance parallel to the optical axis from an inflectionpoint on the object side of the fifth lens that is the third nearest tothe optical axis to the intersection point where the object side of thefifth lens crosses the optical axis is denoted by SGI513. The horizontaldistance parallel to the optical axis from an inflection point on theimage side of the fifth lens that is the third nearest to the opticalaxis to the intersection point where the image side of the fifth lenscrosses the optical axis is denoted by SGI523. The following conditionsare satisfied: SGI513=0 mm, |SGI513|/(|SGI513|+TP5)=0, SGI523=0 mm and|SGI523|/(|SGI523|+TP5)=0.

The horizontal distance parallel to the optical axis from an inflectionpoint on the object side of the fifth lens that is the fourth nearest tothe optical axis to the intersection point where the object side of thefifth lens crosses the optical axis is denoted by SGI514. The horizontaldistance parallel to the optical axis from an inflection point on theimage side of the fifth lens that is the fourth nearest to the opticalaxis to the intersection point where the image side of the fifth lenscrosses the optical axis is denoted by SGI524. The following conditionsare satisfied: SGI514=0 mm, |SGI514|/(|SGI514|+TP5)=0, SGI524=0 mm, and|SGI245|/(|SGI524|+TP5)=0.

The perpendicular distance between the optical axis and the inflectionpoint on the object side of the fifth lens that is the first nearest tothe optical axis is denoted by HIF511. The perpendicular distancebetween the optical axis and the inflection point on the image side ofthe fifth lens that is the first nearest to the optical axis is denotedby HIF521. The following conditions are satisfied: HIF511=0.28212 mm,HIF511/HOI=0.05642, HIF521=2.13850 mm and HIF521/HOI=0.42770.

The perpendicular distance between the inflection point on the objectside of the fifth lens that is the second nearest to the optical axisand the optical axis is denoted by HIF512. The perpendicular distancebetween the inflection point on the image side of the fifth lens that isthe second nearest to the optical axis and the optical axis is denotedby HIF522. The following conditions are satisfied: HIF512=2.51384 mm andHIF512/HOI=0.50277.

The perpendicular distance between the inflection point on the objectside of the fifth lens that is the third nearest to the optical axis andthe optical axis is denoted by HIF513. The perpendicular distancebetween the inflection point on the image side of the fifth lens that isthe third nearest to the optical axis and the optical axis is denoted byHIF523. The following conditions are satisfied: HIF513=0 mm,HIF513/HOI=0, HIF523=0 mm and HIF523/HOI=0.

The perpendicular distance between the inflection point on the objectside of the fifth lens that is the fourth nearest to the optical axisand the optical axis is denoted by HIF514. The perpendicular distancebetween the inflection point on the image side of the fifth lens that isthe fourth nearest to the optical axis and the optical axis is denotedby HIF524. The following conditions are satisfied: HIF514=0 mm,HIF514/HOI=0, HIF524=0 mm and HIF524/HOI=0.

The sixth lens 160 has negative refractive power and is made of plastic.An object side 162 of the sixth lens 160 is a concave surface and animage side 164 of the sixth lens 160 is a concave surface. The objectside 162 has two inflection points and the image side 164 has oneinflection point. Hereby, the angle of incidence from each field of viewto the sixth lens can be adjusted effectively and the aberration of theoptical image capturing system can be improved. The thickness of thesixth lens on the optical axis is denoted by TP6. The thickness of thesixth lens at a height of ½ entrance pupil diameter (HEP) is denoted byETP6.

The horizontal distance parallel to the optical axis from an inflectionpoint on the object side of the sixth lens that is the first nearest tothe optical axis to the intersection point where the object side of thesixth lens crosses the optical axis is denoted by SGI611. The horizontaldistance parallel to the optical axis from an inflection point on theimage side of the sixth lens that is the first nearest to the opticalaxis to the intersection point where the image side of the sixth lenscrosses the optical axis is denoted by SGI621. The following conditionsare satisfied: SGI611=−0.38558 mm, |SGI611|/(|SGI611|+TP6)=0.27212,SGI621=0.12386 mm and |SGI621|/(|SGI621|+TP6)=0.10722.

The horizontal distance parallel to the optical axis from an inflectionpoint on the object side of the sixth lens that is the second nearest tothe optical axis to an intersection point where the object side of thesixth lens crosses the optical axis is denoted by SGI612. The horizontaldistance parallel to the optical axis from an inflection point on theimage side of the sixth lens that is the second nearest to the opticalaxis to the intersection point where the image side of the sixth lenscrosses the optical axis is denoted by SGI622. The following conditionsare satisfied: SGI612=−0.47400 mm, |SGI612|/(|SGI612|+TP6=0.31488,SGI622=0 mm and |SGO622|/(|SGI622|+TP6)=0.

The perpendicular distance between the inflection point on the objectside of the sixth lens that is the first nearest to the optical axis andthe optical axis is denoted by HIF611. The perpendicular distancebetween the inflection point on the image side of the sixth lens that isthe first nearest to the optical axis and the optical axis is denoted byHIF621. The following conditions are satisfied: HIF611=2.24283 mm,HIF611/HOI=0.44857, HIF621=1.07376 mm and HIF621/HOI=0.21475.

The perpendicular distance between the inflection point on the objectside of the sixth lens that is the second nearest to the optical axisand the optical axis is denoted by HIF612. The perpendicular distancebetween the inflection point on the image side of the sixth lens that isthe second nearest to the optical axis and the optical axis is denotedby HIF622. The following conditions are satisfied: HIF612=2.48895 mm andHIF612/HOI=0.49779.

The perpendicular distance between the inflection point on the objectside of the sixth lens that is the third nearest to the optical axis andthe optical axis is denoted by HIF613. The perpendicular distancebetween the inflection point on the image side of the sixth lens that isthe third nearest to the optical axis and the optical axis is denoted byHIF623. The following conditions are satisfied: HIF613=0 mm,HIF613/HOI=0, HIF623=0 mm and HIF623/HOI=0.

The perpendicular distance between the inflection point on the objectside of the sixth lens that is fourth nearest to the optical axis andthe optical axis is denoted by HIF614. The perpendicular distancebetween the inflection point on the image side of the sixth lens that isthe fourth nearest to the optical axis and the optical axis is denotedby HIF624. The following conditions are satisfied: HIF614=0 mm,HIF614/HOI=0, HIF624=0 mm and HIF624/HOI=0.

In the first embodiment, the distance parallel to the optical axisbetween the coordinate point of the object side of the first lens at aheight of ½ HEP and the image plane is denoted by ETL. The distanceparallel to the optical axis between the coordinate point of the objectside of the first lens at a height of ½ HEP and the coordinate point ofthe image side of the sixth lens at a height of ½ HEP is denoted by EIN.The following conditions may be satisfied: ETL=19.304 mm, EIN=15.733 mmand EIN/ETL=0.815.

The first embodiment satisfies the following conditions: ETP=2.371 mm;ETP2=2.134 mm; ETP3=0.497 mm; ETP4=1.111 mm; ETP5=1.783 mm; ETP6=1.404mm; a sum of ETP1 to ETP6 id SETP=9.300 mm. TP1=2.064 mm; TP2=2.500 mm;TP3=0.380 mm; TP4=1.186 mm; TP5=2.184 mm; TP6=1.105 mm; a sum of TP1 toTP6 is TP=9.419 mm; SETP/STP=0.987; SETP/EIN=0.5911.

The first embodiment particularly controls the ratio relationship(ETP/TP) between the thickness (ETP) of each lens at a height of ½entrance pupil diameter (HEP) and the thickness (TP) of the lens towhich the surface belongs on the optical axis in order to achieve abalance between manufacturability and capability of aberrationcorrection. The following relationships may be satisfied:ETP1/TP1=1.149, ETP2/TP2=0.854, ETP3/TP3=1.308, ETP4/TP4=0.936,ETP5/TP5=0.817 and ETP6/TP6=1.271.

The first embodiment controls the horizontal distance between each twoadjacent lenses at a height of ½ entrance pupil diameter (HEP) toachieve a balance between the degree of miniaturization for the lengthof the optical image capturing system HOS, the manufacturability and thecapability of aberration correction. The ratio relationship (ED/IN) ofthe horizontal distance (ED) between the two adjacent lens at the heightof ½ entrance pupil diameter (HEP) to the horizontal distance (IN) onthe optical axis between the two adjacent lens is particularlycontrolled. The following relationships are satisfied: the horizontaldistance parallel to the optical axis between the first lens and thesecond lens at a height of ½ entrance pupil diameter (HEP) ED12=5.285mm. The horizontal distance parallel to the optical axis between thesecond lens and the third lens at a height of ½ entrance pupil diameter(HEP) ED23=0.283 mm. The horizontal distance parallel to the opticalaxis between the third lens and the fourth lens at a height of ½entrance pupil diameter (HEP) ED34=0.330 mm. The horizontal distanceparallel to the optical axis between the fourth lens and the fifth lensat a height of ½ entrance pupil diameter (HEP) ED45=0.348 mm. Thehorizontal distance parallel to the optical axis between the fifth lensand the sixth lens at a height of ½ entrance pupil diameter (HEP)ED56=0.187 mm. The sum of ED12 to ED56 described above is expressed asSED, and SED=6.433 mm.

The horizontal distance on the optical axis between the first lens andthe second lens IN12=5.470 mm and ED12/IN12=0.966. The horizontaldistance on the optical axis between the second lens and the third lensIN23=0.178 mm and ED23/IN23=1.590. The horizontal distance on theoptical axis between the third lens and the fourth lens IN34=0.259 mmand ED34/IN34=1.273. The horizontal distance on the optical axis betweenthe fourth lens and the fifth lens IN45=0.209 mm and ED45/IN45=1.664.The horizontal distance on the optical axis between the fifth lens andthe sixth lens IN56=0.034 mm and ED56/IN56=5.557. The sum of IN12 toIN56 described above is expressed as SIN and SIN=6.150 mm.SED/SIN=1.046.

The first embodiment satisfies the following conditions:ED12/ED23=18.685, ED23/ED34=0.857, ED34/ED45=0.947, ED45/ED56=1.859,IN12/IN23=30.746, IN23/IN34=0.686, IN34/IN45=1.239, and IN45/IN56=6.207.

The horizontal distance parallel to the optical axis between acoordinate point on the image side of the sixth lens at the height of ½HEP and the image plane is denoted by EBL=3.570 mm. The horizontaldistance parallel to the optical axis between an intersection pointwhere the image side of the sixth lens crosses the optical axis and theimage plane is denoted by BL=4.032 mm. The embodiment of the presentinvention may meet the following condition: EBL/BL32 0.8854. In thefirst embodiment, the distance parallel to the optical axis between thecoordinate point on the image side of the sixth lens at the height of ½HEP and the IR-bandstop filter is denoted by EIR=1.950 mm. The distanceparallel to the optical axis between the intersection point where theimage side of the sixth lens crosses the optical axis and theIR-bandstop filter is denoted by PIR=2.121 mm. The following conditionis satisfied: EIR/PIR=0.920.

The IR-cut filter 180 is made of glass, and disposed between the sixthlens 160 and the image plane 190, and does not affect the focal lengthof the optical image capturing system.

In the optical image capturing system of the first embodiment, the focallength of the optical image capturing system is denoted by f, theentrance pupil diameter of the optical image capturing system is denotedby HEP, and a half maximum angle of view of the optical image capturingsystem is denoted by HAF. The detailed parameters are shown as below:f=4.075 mm, f/HEP=1.4, HAF=50.001° and tan(HAF)=1.1918.

In the optical image capturing system of the first embodiment, the focallength of the first lens is denoted by f1 and the focal length of thesixth lens is denoted by f6. The following conditions are satisfied:f1=−7.828 mm, |f/f1|=0.52060, f6=−4.886 mm and |f1|>|f6|.

In the optical image capturing system of the first embodiment, focallengths of the second lens to the fifth lens is denoted by f2, f3, f4and f5, respectively. The following conditions are satisfied:|f2|+|f3|+f4|+|f5|=95.50815 mm, |f1|+|f6|=12.71352 mm and|f2|+|f3|+|f4|+|f5|>|f1|+|f6|.

The ratio of the focal length f of the optical image capturing system tothe focal length fp of each of lens with positive refractive power isdenoted by PPR. The ratio of the focal length f of the optical imagecapturing system to a focal length fn of each of lens with negativerefractive power is denoted by NPR. In the optical image capturingsystem of the first embodiment, the sum of the PPR of all lenses withpositive refractive power is ΣPPR=f/f2+f/f4+f/f5=1.63290. The sum of theNPR of all lenses with negative refractive powers isΣNPR=|f/f1|+|f/f3|+|f/f5|=1.51305, ΣPPR/|ΣNPR|=1.07921. Simultaneously,the following conditions are also satisfied: |f/f2|=0.69101,|f/f3|=0.15834, |f/f4|=0.06883, |f/f5|=0.87305 and |f/f6|=0.83412.

In the optical image capturing system of the first embodiment, thedistance from the object side of the first lens to the image side of thesixth lens is denoted by InTL. The distance from the object side of thefirst lens to the image plane is denoted by HOS. The distance from theaperture to the image plane is denoted by InS. A half diagonal length ofthe effective detection field of the image sensing device is denoted byHOI. The distance from the image side of the sixth lens to the imageplane is denoted by BFL. The following conditions are satisfied:InTL+BFL32 HOS, HOS=19.54120 mm, HOI=5.0 mm, HOS/HOI=3.90824,HOS/f=4.7952, InS=11.685 mm, and InS/HOS=0.59794.

In the optical image capturing system of the first embodiment, a totalthickness of all lenses with refractive power on the optical axis isdenoted by ΣTP. The following conditions are satisfied: ΣTP=8.13899 mmand ΣTP/InTL=0.52477. Hereby, this configuration can keep the contrastratio of the optical image capturing system and the yield rate aboutmanufacturing lens at the same time, and provide the proper back focallength so as to accommodate other elements.

In the optical image capturing system of the first embodiment, thecurvature radius of the object side of the first lens is denoted by R1.The curvature radius of the image side of the first lens is denoted byR2. The following condition is satisfied: |R1/R2|=8.99987. Hereby, thefirst lens has a suitable magnitude of positive refractive power, so asto prevent the longitudinal spherical aberration from increasing toofast.

In the optical image capturing system of the first embodiment, thecurvature radius of the object side of the sixth lens is denoted by R11.The curvature radius of the image side of the sixth lens is denoted byR12. The following condition is satisfied: (R11-R12)/(R11+R12)=1.27780.Hereby, this configuration is beneficial for correcting the astigmatismgenerated by the optical image capturing system.

In the optical image capturing system of the first embodiment, the sumof focal lengths of all lenses with positive refractive power is denotedby ΣPP. The following conditions are satisfied: ΣPP=f2+f4+f5=69.770 mmand f5/(f2+f4+f5)=0.067. Hereby, this configuration is helpful todistribute the positive refractive power of a single lens to other lenswith positive refractive powers in an appropriate way, so as to suppressthe generation of noticeable aberrations in the propagating process ofthe incident light in the optical image capturing system.

In the optical image capturing system of the first embodiment, the sumof focal lengths of all lenses with negative refractive power is denotedby ΣNP. The following conditions are satisfied: ΣNP=f1+f3+f6=−38.451 mmand f6/(f1+f3+f6)=0.127. Hereby, this configuration is helpful todistribute the negative refractive power of the sixth lens to other lenswith negative refractive powers in an appropriate way, so as to suppressthe generation of noticeable aberrations in the propagating process ofthe incident light in the optical image capturing system.

In the optical image capturing system of the first embodiment, thedistance on the optical axis between the first lens and the second lensis denoted by IN12. The following conditions are satisfied: IN12=6.418mm and IN12/f=1.57491. Therefore, this configuration is helpful toimprove the chromatic aberration of the lens in order to elevate theperformance of the optical image capturing system of the firstembodiment.

In the optical image capturing system of the first embodiment, adistance on the optical axis between the fifth lens and the sixth lensis denoted by IN56. The following conditions are satisfied: IN56=0.025mm and IN56/f=0.00613. Therefore, this configuration is helpful toimprove the chromatic aberration of the lens in order to elevate theperformance of the optical image capturing system of the firstembodiment.

In the optical image capturing system of the first embodiment, thethicknesses of the first lens and the second lens on the optical axis isdenoted by TP1 and TP2, respectively. The following conditions aresatisfied: TP1=1.934 mm, TP2=2.486 mm and (TP1+IN12)/TP2=3.36005.Therefore, this configuration is helpful to control the sensitivitygenerated by the optical image capturing system and elevate theperformance of the optical image capturing system of the firstembodiment.

In the optical image capturing system of the first embodiment, thethicknesses of the fifth lens and the sixth lens on the optical axis isdenoted by TP5 and TP6, respectively, and the distance between theaforementioned two lenses on the optical axis is IN56. The followingconditions are satisfied: TP5=1.072 mm, TP6=1.031 mm and(TP6+IN56)/TP5=0.98555. Therefore, this configuration is helpful tocontrol the sensitivity generated by the optical image capturing systemand reduce the total height of the optical image capturing system.

In the optical image capturing system of the first embodiment, thedistance on the optical axis between the third lens and the fourth lensis denoted by IN34. The distance on the optical axis between the fourthlens and the fifth lens is denoted by IN45. The following conditions aresatisfied: IN34=0.401 mm, IN45=0.025 mm, andTP4/(IN34+TP4+IN45)=0.74376. Therefore, this configuration is helpful toslightly correct the aberration of the propagating process of theincident light layer by layer and decrease the total height of theoptical image capturing system.

In the optical image capturing system of the first embodiment, ahorizontal distance parallel to the optical axis from an intersectionpoint where the object side 152 of the fifth lens crosses the opticalaxis to a maximum effective half diameter position on the object side152 of the fifth lens is denoted by InRS51. The horizontal distanceparallel to the optical axis from an intersection point where the imageside 154 of the fifth lens crosses the optical axis to a maximumeffective half diameter position on the image side 154 of the fifth lensis denoted by InRS52. The thickness of the fifth lens on the opticalaxis is denoted by TP5. The following conditions are satisfied:InRS51=−0.34789 mm, InRS52=−0.88185 mm, |InRS51|/TP5=0.32458 and|InRS52|/TP5=0.82276. Hereby, this configuration is favorable formanufacturing and forming of lens and keeps the miniaturization of theoptical image capturing system effectively.

In the optical image capturing system of the first embodiment, theperpendicular distance between a critical point on the object side 152of the fifth lens and the optical axis is denoted by HVT51. Theperpendicular distance between a critical point on the image side 154 ofthe fifth lens and the optical axis is denoted by HVT52. The followingconditions are satisfied: HVT51=0.515349 mm and HVT52=0 mm.

In the optical image capturing system of the first embodiment, ahorizontal distance in parallel with the optical axis from anintersection point where the object side of the sixth lens crosses theoptical axis to a maximum effective half diameter position on the objectside of the sixth lens is denoted by InRS61. A distance parallel to theoptical axis from an intersection point where the image side of thesixth lens crosses the optical axis to a maximum effective half diameterposition on the image side of the sixth lens is denoted by InRS62. Thethickness of the sixth lens is TP6. The following conditions aresatisfied: InRS61=−0.58390 mm, InRS62=0.41976 mm, |InRS61|/TP6=0.56616,and |InRS62|/TP6=0.40700. Hereby, this configuration is favorable formanufacturing and forming of lens and keeps the miniaturization of theoptical image capturing system effectively.

In the optical image capturing system of the first embodiment, theperpendicular distance between a critical point on the object side ofthe sixth lens and the optical axis is denoted by HVT61. Theperpendicular distance between a critical point on the image side of thesixth lens and the optical axis is denoted by HVT62. The followingconditions are satisfied: HVT61=0 mm and HVT62=0 mm.

In the optical image capturing system of the first embodiment, thefollowing condition is satisfied: HVT51/HOI=0.1031. Therefore, thisconfiguration is helpful to correct the aberration of surrounding fieldof view of the optical image capturing system.

In the optical image capturing system of the first embodiment, thefollowing condition is satisfied: HVT51/HOS=0.02634. Therefore, thisconfiguration is helpful to correct the aberration of surrounding fieldof view of the optical image capturing system.

In the optical image capturing system of the first embodiment, thesecond lens, the third lens and the sixth lens have negative refractivepower. The coefficient of dispersion of the second lens is denoted byNA2. The coefficient of dispersion of the third lens is denoted by NA3.The coefficient of dispersion of the sixth lens is denoted by NA6. Thefollowing condition is satisfied: NA6/NA21. Therefore, thisconfiguration is helpful to correct the chromatic aberration of theoptical image capturing system.

In the optical image capturing system of the first embodiment, TVdistortion and optical distortion for image formation in the opticalimage capturing system is denoted by TDT and ODT, respectively. Thefollowing conditions are satisfied: |TDT|=2.124% and |ODT|=5.076%.

In the optical image capturing system of the present embodiment,contrast transfer rates of modulation transfer with spatial frequenciesof 55 cycles/mm of a visible light at the optical axis on the imageplane, 0.3 HOI and 0.7 HOI are respectively denoted by MTFE0, MTFE3 andMTFE7. The following relations are satisfied: MTFE0 is about 0.84, MTFE3is about 0.84 and MTFE7 is about 0.75. In the optical image capturingsystem of the present embodiment, the contrast transfer rates ofmodulation transfer with spatial frequencies of 110 cycles/mm of avisible light at the optical axis on the image plane, 0.3 HOI and 0.7HOI are respectively denoted by MTFQ0, MTFQ3 and MTFQ7. The followingrelations are satisfied: MTFQ0 is about 0.66, MTFQ3 is about 0.65 andMTFQ7 is about 0.51. In the optical image capturing system of thepresent embodiment, the contrast transfer rates of modulation transferwith spatial frequencies of 220 cycles/mm (MTF values) at the opticalaxis on the image plane, 0.3 HOT and 0.7 HOI are respectively denoted byMTFH0, MTFH3 and MTFH7. The following relations are satisfied: MTFH0 isabout 0.17, MTFH3 is about 0.07 and MTFH7 is about 0.14.

In the optical image capturing system of the present embodiment, whenthe operation wavelength 850 nm focuses on the image plane, themodulation transfer rates (MTF values) with the spatial frequency of 55cycles/mm where the images are at the optical axis, 0.3 field of viewand 0.7 field of view are respectively expressed as MTFI0, MTFI3 andMTFI7. The following conditions are satisfied: MTFI0 is about 0.81,MTFI3 is about 0.8 and MTFI7 is about 0.15.

Please refer to table 1 and table 2

TABLE 1 Lens Parameters for the First Embodiment f = 4.075 mm; f/HEP =1.4; HAF = 50.000 deg Thickness Refractive Dispersion Focal SurfaceCurvature Radius (mm) Material index coefficient length 0 Object PlanoPlano 1 Lens 1 −40.99625704 1.934 Plastic 1.515 56.55 −7.828 24.555209289 5.923 3 Aperture Plano 0.495 4 Lens 2 5.333427366 2.486Plastic 1.544 55.96 5.897 5 −6.781659971 0.502 6 Lens 3 −5.6977942870.380 Plastic 1.642 22.46 −25.738 7 −8.883957518 0.401 8 Lens 413.19225664 1.236 Plastic 1.544 55.96 59.205 9 21.55681832 0.025 10 Lens8.987806345 1.072 Plastic 1.515 56.55 4.668 11 −3.158875374 0.025 12Lens −29.46491425 1.031 Plastic 1.642 22.46 −4.886 13 3.593484273 2.41214 IR-cut filter Plano 0.200 1.517 64.13 15 Plano 1.420 16 Image planePlano Reference wavelength = 555 nm; Shield position: The clear apertureof the first surface is 5.800 mm. The clear aperture of the thirdsurface is 1.570 mm. The clear aperture of the fifth surface is 1.950mm.

Table 2 is the aspheric coefficients of the first embodiment

TABLE 2 Aspheric Coefficients Surface 1 2 4 5 6 7 8 k 4.310876E+01−4.707622E+00  2.616025E+00  2.445397E+00  5.645686E+00 −2.117147E+01−5.287220E+00 A4 7.054243E−03  1.714312E−02 −8.377541E−03 −1.789549E−02−3.379055E−03 −1.370959E−02 −2.937377E−02 A6 −5.233264E−04 −1.502232E−04 −1.838068E−03 −3.657520E−03 −1.225453E−03  6.250200E−03 2.743532E−03 A8 3.077890E−05 −1.359611E−04  1.233332E−03 −1.131622E−03−5.979572E−03 −5.854426E−03 −2.457574E−03 A10 −1.260650E−06  2.680747E−05 −2.390895E−03  1.390351E−03  4.556449E−03  4.049451E−03 1.874319E−03 A12 3.319093E−08 −2.017491E−06  1.998555E−03 −4.152857E−04−1.177175E−03 −1.314592E−03 −6.013661E−04 A14 −5.051600E−10  6.604615E−08 −9.734019E−04  5.487286E−05  1.370522E−04  2.143097E−04 8.792480E−05 A16 3.380000E−12 −1.301630E−09  2.478373E−04 −2.919339E−06−5.974015E−06 −1.399894E−05 −4.770527E−06 Surface 9 10 11 12 13 k 6.200000E+01 −2.114008E+01 −7.699904E+00 −6.155476E+01 −3.120467E−01 A4−1.359965E−01 −1.263831E−01 −1.927804E−02 −2.492467E−02 −3.521844E−02 A6 6.628518E−02  6.965399E−02  2.478376E−03 −1.835360E−03  5.629654E−03 A8−2.129167E−02 −2.116027E−02  1.438785E−03  3.201343E−03 −5.466925E−04A10  4.396344E−03  3.819371E−03 −7.013749E−04 −8.990757E−04 2.231154E−05 A12 −5.542899E−04 −4.040283E−04  1.253214E−04 1.245343E−04  5.548990E−07 A14  3.768879E−05  2.280473E−05−9.943196E−06 −8.788363E−06 −9.396920E−08 A16 −1.052467E−06−5.165452E−07  2.898397E−07  2.494302E−07  2.728360E−09

Table 1 is the detailed structure data to the first embodiment, whereinthe unit of the curvature radius, the thickness, the distance, and thefocal length is millimeters (mm). Surfaces 0-16 illustrate the surfacesfrom the object side to the image side. Table 2 is the asphericcoefficients of the first embodiment, wherein k is the conic coefficientin the aspheric surface formula. A1-A20 are aspheric surfacecoefficients from the first to the twentieth orders for each surface. Inaddition, the tables for each of the embodiments as follows correspondto the schematic views and the aberration graphs for each of theembodiments. The definitions of data in the tables are the same as thosein table 1 and table 2 for the first embodiment. Therefore, similardescription shall not be illustrated again. Furthermore, the definitionsof element parameters in each of the embodiments are the same as thosein the first embodiment.

Second Embodiment

Please refer to FIGS. 2A to 2C. FIG. 2A is a schematic view of theoptical image capturing system according to the second embodiment of thepresent invention. FIG. 2B is a curve diagram illustrating the sphericalaberration, astigmatism and optical distortion of the optical imagecapturing system in order from left to right according to the secondembodiment of the present invention. FIG. 2C is a characteristic diagramof modulation transfer of infrared light spectrum for the optical imagecapturing system according to the second embodiment of the presentinvention. As shown in FIG. 2A, an optical image capturing systemincludes, in the order from the object side to the image side, anaperture 200, a first lens 210, a second lens 220, a third lens 230, afourth lens 240, a fifth lens 250, a sixth lens 260, an IR-cut filter280, an image plane 290 for infrared light, and an image sensor element292.

The first lens 210 has positive refractive power and is made of plastic.The object side 212 of the first lens 210 is a convex surface and theimage side 214 of the first lens 210 is a concave surface, and theobject side 212 and the image side 214 are aspheric. The object side 212has one inflection points, and the image side 214 has two inflectionpoints.

The second lens 220 has positive refractive power and is made ofplastic. The object side 212 of the second lens 220 is a concave surfaceand the image side 224 of the second lens 220 is a convex surface, andthe object side 222 and the image side 224 are aspheric. The object side222 has one inflection points, and the image side 224 has two inflectionpoints.

The third lens 230 has positive refractive power and is made of plastic.An object side 232 of the third lens 230 is a concave surface and animage side 234 of the third lens 230 is a convex surface, and the objectside 232 and the image side 234 are both aspheric. The object side 232has two inflection points, and the image side 234 has two inflectionpoints.

The fourth lens 240 has negative refractive power and is made ofplastic. An object side 242 of the fourth lens 240 is a convex surfaceand an image side 244 of the fourth lens 240 is a concave surface, andthe object side 242 and the image side 244 of the fourth lens 240 areboth aspheric. The object side 242 has one inflection point, and theimage side 244 has one inflection point.

The fifth lens 250 has positive refractive power and is made of plastic.An object side 252 of the fifth lens 250 is a convex surface and animage side 254 of the fifth lens 250 is a concave surface, and theobject side 252 and the image side 254 are both aspheric. The objectside 252 has one inflection point and the image side 254 has threeinflection points.

The sixth lens 260 has negative refractive power and is made of plastic.An object side 262 of the sixth lens 260 is a convex surface and animage side 264 of the sixth lens 260 is a concave surface, and theobject side 262 and the image side 264 are both aspheric. The objectside 262 has two inflection points and the image side 264 has oneinflection point. Hereby, this configuration is beneficial to shortenthe back focal length of the optical image capturing system so as tokeep the optical image capturing system minimized. Furthermore, theincident angle of the off-axis rays can be effectively reduced, therebyfurther correcting the off-axis aberration.

The IR-cut filter 280 is made of glass, and disposed between the sixthlens 260 and the image plane 290, and does not affect the focal lengthof the optical image capturing system.

Please refer to table 3 and table 4

TABLE 3 Lens Parameters for the Second Embodiment f = 8.535 mm; f/HEP =0.900; HAF = 20.840 deg Thickness Refractive Dispersion Focal SurfaceCurvature Radius (mm) Material index coefficient length 0 Object 1E+181E+18 1 Aperture 1E+18 0.000 2 Lens 1 6.461107611 1.232 Plastic 1.66120.39 18.6717 3 12.40683056 0.922 4 Lens 2 −27.11277128 1.767 Plastic1.661 20.39 80.8068 5 −18.50717489 0.871 6 Lens 3 −13.1451833 0.740Plastic 1.544 56.09 29.2257 7 −7.350236389 0.050 8 Lens 4 4.6571289161.763 Plastic 1.544 56.09 −13.6478 9 2.482579979 0.880 10 Lens 53.64520872 1.587 Plastic 1.544 56.09 7.00619 11 65.81386432 1.345 12Lens 6 30.90815247 1.018 Plastic 1.661 20.39 −11.6087 13 6.1088470170.287 14 IR-cut filter 1E+18 0.215 BK_7 1.517 64.13 15 1E+18 0.984 16Image plane 1E+18 0.016 Reference wavelength = 940 nm; Shield position:The clear aperture of the sixth surface is 4.495 mm. The clear apertureof the seventh surface is 4.496 mm. The clear aperture of the tenthsurface is 3.500 mm. The clear aperture of the thirteenth surface is3.300 mm.

Table 4 is the aspheric coefficients of the second embodiment

TABLE 4 Aspheric Coefficients Surface 2 3 4 5 6 7 8 k −5.413423E+00 −1.367076E+01 −4.399592E+00 3.459240E+00 −2.907024E+01 −1.987478E+01 −5.952043E−01  A4 6.344488E−04 −3.914899E−03 −4.984335E−03−5.633763E−03  −7.209639E−03 2.346609E−03 1.213925E−03 A6 −1.188617E−04  3.398810E−04  9.351221E−04 1.306325E−03  2.176339E−03 −1.685381E−04 −4.984115E−04  A8 1.213143E−05 −1.893663E−05 −6.598803E−05−1.203856E−04  −3.026713E−04 −1.363340E−05  2.366088E−05 A10−1.275356E−06   1.719783E−06  3.222872E−06 6.565375E−06  2.573724E−053.089597E−06 7.567020E−07 A12 8.034150E−08 −1.216921E−07 −1.252157E−07−2.406344E−07  −1.277364E−06 −1.287551E−07  −7.613454E−08  A14−2.264549E−09   4.628093E−09  3.083285E−09 5.459738E−09  3.430150E−084.628624E−10 1.082529E−09 A16 2.200776E−11 −6.731543E−11 −3.172335E−11−5.659393E−11  −3.930302E−10 3.448304E−11 2.710412E−12 A18 0.000000E+00 0.000000E+00  0.000000E+00 0.000000E+00  0.000000E+00 0.000000E+000.000000E+00

9 10 11 12 13 k −3.685211E+00 −4.740415E+00  3.880347E+01 7.629883E+01−3.118108E+00  A4 −5.663211E−04 2.567170E−03 −3.047128E−03 −2.141173E−02  −1.569294E−02  A6  1.184151E−03 4.684468E−04 6.499484E−041.874208E−03 1.095788E−03 A8 −3.691551E−04 −1.892229E−04  8.453169E−05−4.161893E−05  1.451359E−04 A10  4.076676E−05 4.351701E−05−3.181849E−05  −5.121709E−06  −4.933765E−05  A12 −2.298783E−06−6.952632E−06  3.558317E−06 6.862672E−07 6.262312E−06 A14  6.726912E−085.190046E−07 −2.045071E−07  −4.373721E−08  −3.963826E−07  A16−8.164502E−10 −1.416218E−08  6.913686E−09 1.770992E−09 1.013644E−08 A18 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00

In the second embodiment, the aspheric surface formula is presented inthe same way in the first embodiment. In addition, the definitions ofparameters in following tables are the same as those in the firstembodiment. Therefore, similar description shall not be illustratedagain.

The values stated as follows can be obtained according to table 3 andtable 4.

Second embodiment (Reference wavelength = 940 nm) The exit pupildiameter of image-side surface of the sixth lens is denoted by HXP MTFE0MTFE3 MTFE7 MTFQ0 MTFQ3 MTFQ7 0.88  0.73  0.83  0.74  0.33  0.63  ETP1ETP2 ETP3 ETP4 ETP5 ETP6 0.763 1.655 0.674 1.717 1.120 1.617 ETP1/TP1ETP2/TP2 ETP3/TP3 ETP4/TP4 ETP5/TP5 ETP6/TP6 0.619 0.937 0.911 0.9740.706 1.589 ETL EBL EIN EIR PIR EIN/ETL 12.999  1.428 11.571  0.2130.287 0.890 SETP/EIN EIR/PIR SETP STP SETP/STP BL 0.652 0.743 7.5478.107 0.931 1.233 ED12 ED23 ED34 ED45 ED56 EBL/BL 0.538 0.903 1.4490.781 0.352  1.1582 SED SIN SED/SIN ED12/ED23 ED23/ED34 ED34/ED45 4.0244.068 0.989 0.596 0.623 1.855 ED12/IN12 ED23/IN23 ED34/IN34 ED45/IN45ED56/IN56 ED45/ED56 0.584 1.037 28.986  0.888 0.262 2.218 |f/f1| |f/f2||f/f3| |f/f4| |f/f5| |f/f6|  0.45710  0.10562  0.29203  0.62536  1.21818 0.73521 ΣPPR ΣNPR ΣPPR/|ΣNPR| IN12/f IN56/f TP4/(IN34 + TP4 + IN45) 2.59267  0.84083  3.08348  0.10808  0.15754  0.65475 |f1/f2| |f2/f3|(TP1 + IN12)/TP2 (TP6 + IN56)/TP5  0.23107  2.76492 1.21911 1.48890 HOSInTL HOS/HOI InS/HOS ODT % TDT %  13.40800  12.17460  4.06303  0.91134 1.38733  0.46004 HVT51 HVT52 HVT61 HVT62 HVT62/HOI HVT62/HOS  3.220750     0.63665  2.10327  0.63735  0.15687 TP2/TP3 TP3/TP4 InRS61 InRS62|InRS61|/TP6 |InRS62|/TP6  2.38684  0.41989  −0.53241  0.08875  0.52312 0.08720 IN12 IN23 IN34 IN45 IN56 0.922 mm 0.871 mm 0.050 mm 0.880 mm1.345 mm

The values stated as follows can be obtained according to table 3 andtable 4.

Values Related to Inflection Point of Second Embodiment (PrimaryReference Wavelength = 940 nm) HIF111 4.6333 HIF111/HOI 1.4040 SGI1111.1595 |SGI111|/(|SGI111| + TP1) 0.4849 HIF121 1.4901 HIF121/HOI 0.4515SGI121 0.0698 |SGI121|/(|SGI121| + TP1) 0.0536 HIF122 2.3285 HIF122/HOI0.7056 SGI122 0.1267 |SGI122|/(|SGI122| + TP1) 0.0932 HIF211 2.0184HIF211/HOI 0.6116 SGI211 −0.1094 |SGI211|/(|SGI211| + TP2) 0.0583 HIF2212.0721 HIF221/HOI 0.6279 SGI221 −0.1508 |SGI221|/(|SGI221| + TP2) 0.0786HIF222 3.2728 HIF222/HOI 0.9918 SGI222 −0.2851 |SGI222|/(|SGI222| + TP2)0.1389 HIF311 1.8617 HIF311/HOI 0.5642 SGI311 −0.1460|SGI311|/(|SGI311| + TP3) 0.1647 HIF312 4.1984 HIF312/HOI 1.2722 SGI312−0.0378 |SGI312|/(|SGI312| + TP3) 0.0486 HIF321 1.9868 HIF321/HOI 0.6021SGI321 −0.1859 |SGI321|/(|SGI321| + TP3) 0.2007 HIF322 4.0299 HIF322/HOI1.2212 SGI322 −0.2351 |SGI322|/(|SGI322| + TP3) 0.2410 HIF411 3.7528HIF411/HOI 1.1372 SGI411 1.3548 |SGI411|/(|SGI411| + TP4) 0.4345 HIF4211.9610 HIF421/HOI 0.5942 SGI421 0.5936 |SGI421|/(|SGI421| + TP4) 0.2519HIF511 2.2983 HIF511/HOI 0.6964 SGI511 0.6345 |SGI511|/(|SGI511| + TP5)0.2857 HIF521 0.8879 HIF521/HOI 0.2691 SGI521 0.0044|SGI521|/(|SGI521| + TP5) 0.0028 HIF522 0.8882 HIF522/HOI 0.2691 SGI5220.0045 |SGI522|/(|SGI522| + TP5) 0.0028 HIF523 0.9267 HIF523/HOI 0.2808SGI523 0.0047 |SGI523|/(|SGI523| + TP5) 0.0030 HIF611 0.3629 HIF611/HOI0.1100 SGI611 0.0018 |SGI611|/(|SGI611| + TP6) 0.0017 HIF612 2.5487HIF612/HOI 0.7723 SGI612 −0.3628 |SGI612|/(|SGI612| + TP6) 0.2628 HIF6210.9988 HIF621/HOI 0.3027 SGI621 0.0661 |SGI621|/(|SGI621| + TP6) 0.0610

Third Embodiment

Please refer to FIGS. 3A to 3C. FIG. 3A is a schematic view of theoptical image capturing system according to the third embodiment of thepresent invention. FIG. 3B is a curve diagram illustrating the sphericalaberration, astigmatism and optical distortion of the optical imagecapturing system in order from left to right according to the thirdembodiment of the present invention. FIG. 3C is a characteristic diagramof modulation transfer of infrared light spectrum for the optical imagecapturing system according to the third embodiment of the presentinvention. As shown in FIG. 3A, an optical image capturing systemincludes, in the order from the object side to the image side, a firstlens 310, a second lens 320, an aperture 300, a third lens 330, a fourthlens 340, a fifth lens 350, a sixth lens 360, an IR-cut filter 380, animage plane 390 for infrared light, and an image sensor element 392.

The first lens 310 has positive refractive power and is made of plastic.The object side 312 of the first lens 310 is a concave surface and theimage side 314 of the first lens 310 is a convex surface. The objectside 312 and the image side 314 are aspheric. The object side 312 hasone inflection point, and the image side 314 has one inflection point.

The second lens 320 has negative refractive power and is made ofplastic. The object side 322 of the second lens 320 is a concave surfaceand the image side 324 of the second lens 320 is a convex surface, andthe object side 322 and the image side 324 are aspheric. The object side322 has one inflection point, and the image side 324 has one inflectionpoint.

The third lens 330 has negative refractive power and is made of plastic.An object side 332 of the third lens is a concave surface and an imageside 334 of the third lens 330 is a concave surface, and the object side332 and the image side 334 are both aspheric. The object side 332 hasone inflection point, and the image side 334 has three inflectionpoints.

The fourth lens 340 has positive refractive power and is made ofplastic. An object side 342 of the fourth lens 340 is a convex surfaceand an image side 344 of the fourth lens 340 is a concave surface, andthe object side 342 and the image side 344 are both aspheric. The objectside 342 has one inflection point, and the image side 344 has oneinflection point.

The fifth lens 350 has positive refractive power and is made of plastic.An object side 352 of the fifth lens 350 is a convex surface and animage side 354 of the fifth lens is a concave surface, and the objectside 352 and the image side 354 are both aspheric. The object side 352has two inflection points and the image side 354 has two inflectionpoints.

The sixth lens 360 has negative refractive power and is made of plastic.An object side 362 of the sixth lens 360 is a concave surface and animage side 364 of the sixth lens 360 is a concave surface, and theobject side 362 and the image side 364 are both aspheric. The objectside 362 has two inflection points and the image side 364 has oneinflection point. Hereby, this configuration is beneficial to shortenthe back focal length of the optical image capturing system so as tokeep the optical image capturing system minimized. Furthermore, theincident angle of the off-axis rays can be effectively reduced, therebyfurther correcting the off-axis aberration.

The IR-cut filter 380 is made of glass, and disposed between the sixthlens 360 and the image plane 390, and does not affect the focal lengthof the optical image capturing system.

Please refer to table 5 and table 6

TABLE 5 Lens Parameters for the Third Embodiment f = 6.569 mm; f/HEP =0.920; HAF = 26.708 deg Thickness Refractive Dispersion Focal SurfaceCurvature Radius (mm) Material index coefficient length 0 Object 1E+181E+18 1 Lens 1 −286.176153 1.236 Plastic 1.661 20.39 11.8795 2−7.721287201 0.946 3 Lens 2 −2.51806736 1.228 Plastic 1.544 56.09−37.3509 4 −3.367674383 0.110 5 Aperture 1E+18 0.150 6 Lens 3−31.19752491 1.499 Plastic 1.544 56.09 −31.848 7 39.93185327 0.050 8Lens 4 2.46771561 1.424 Plastic 1.636 23.89 13.2024 9 2.69998434 0.93910 Lens 8.215038525 2.000 Plastic 1.661 20.39 8.97916 11 −19.928891461.670 12 Lens −20.04039353 0.578 Plastic 1.661 20.39 −15.4323 1321.39485723 0.184 14 IR-cut filter 1E+18 0.215 BK_7 1.517 64.13 15 1E+181.000 16 Image plane 1E+18 0.000 Reference wavelength = 940 nm; Shieldposition: The clear aperture of the first surface is 4.800 mm. The clearaperture of the seventh surface is 4.320 mm. The clear aperture of thethirteenth surface is 2.895 mm.

Table 6 is the aspheric coefficients of the third embodiment

TABLE 6 Aspheric Coefficients Surface 1 2 3 4 6 7 8 k −8.999995E+011.513467E+00 −4.423597E+00  −1.246043E+00  −8.735500E+01 7.593712E+01−1.043847E+00 A4 −2.232222E−03 2.824364E−03 −4.049923E−03  3.873651E−04−4.552374E−03 −4.156709E−03  −6.036640E−03 A6 −3.177984E−04−8.809813E−04  2.045406E−04 5.315927E−04  1.753877E−03 3.123805E−04 8.994058E−04 A8  2.837004E−05 1.309364E−04 7.054000E−06 −1.001653E−04 −2.515427E−04 3.377953E−05 −1.395808E−04 A10  2.296343E−07−1.068233E−05  2.566288E−07 1.124267E−05  2.548258E−05 −6.288601E−06  2.175766E−05 A12 −9.193339E−08 5.946634E−07 −5.524263E−08 −6.637517E−07  −1.630905E−06 4.301172E−07 −2.582705E−06 A14 3.439785E−09 −1.913068E−08  2.089660E−09 1.952121E−08  5.744753E−08−1.571968E−08   1.653099E−07 A16 −4.110632E−11 2.616075E−10−2.523023E−11  −2.240810E−10  −8.539584E−10 2.330868E−10 −4.242923E−09A18  0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00  0.000000E+000.000000E+00  0.000000E+00 Surface 9 10 11 12 13 k −5.185989E+00 −8.986136E+01  −3.046190E+01   4.544671E+01 1.113374E+01 A4 2.225092E−021.896790E−02 7.056785E−03 −2.098379E−03 −3.289258E−03  A6 −4.744928E−03 −5.191707E−03  −2.106317E−03  −7.333804E−04 −6.167365E−04  A81.011327E−03 1.708666E−03 1.619938E−03 −6.657548E−05 7.932477E−05 A10−1.411197E−04  −3.280140E−04  −4.973992E−04   1.278747E−04 2.534089E−05A12 1.014399E−05 3.718913E−05 8.619483E−05 −3.044980E−05 −7.529364E−06 A14 −3.614530E−07  −2.300525E−06  −7.264910E−06   3.054921E−067.501540E−07 A16 5.173364E−09 5.796564E−08 2.242319E−07 −1.131000E−07−2.684113E−08  A18 0.000000E+00 0.000000E+00 0.000000E+00  0.000000E+000.000000E+00

In the third embodiment, the aspheric surface formula is presented inthe same way in the first embodiment. In addition, the definitions ofparameters in following tables are the same as those in the firstembodiment. Therefore, similar description shall not be illustratedagain.

The values stated as follows can be obtained according to table 5 andtable 6.

Third embodiment (Reference wavelength = 940 nm) The exit pupil diameterof image-side surface of the sixth lens is denoted by HXP MTFE0 MTFE3MTFE7 MTFQ0 MTFQ3 MTFQ7 0.79  0.76  0.69  0.62  0.55  0.49  ETP1 ETP2ETP3 ETP4 ETP5 ETP6 0.908 1.294 1.534 1.378 1.736 0.956 ETP1/TP1ETP2/TP2 ETP3/TP3 ETP4/TP4 ETP5/TP5 ETP6/TP6 0.734 1.053 1.024 0.9680.868 1.654 ETL EBL EIN EIR PIR EIN/ETL 13.463  1.430 12.033  0.2150.184 0.894 SETP/EIN EIR/PIR SETP STP SETP/STP BL 0.649 1.167 7.8067.966 0.980 1.012 ED12 ED23 ED34 ED45 ED56 EBL/BL 0.381 1.311 1.4960.502 0.536  1.4130 SED SIN SED/SIN ED12/ED23 ED23/ED34 ED34/ED45 4.2273.866 1.093 0.290 0.876 2.978 ED12/IN12 ED23/IN23 ED34/IN34 ED45/IN45ED56/IN56 ED45/ED56 0.403 5.038 29.642  0.535 0.321 0.937 |f/f1| |f/f2||f/f3| |f/f4| |f/f5| |f/f6|  0.55294  0.17586  0.20625  0.49753  0.73154 0.42564 ΣPPR ΣNPR ΣPPR/|ΣNPR| IN12/f IN56/f TP4/(IN34 + TP4 + IN45) 1.98825  0.60150  3.30548  0.14398  0.25424  0.58993 |f1/f2| |f2/f3|(TP1 + IN12)/TP2 (TP6 + IN56)/TP5  0.31805  1.17279 1.77675 1.12417 HOSInTL HOS/HOI InS/HOS ODT % TDT %  12.84390  11.83170  3.89209  0.72589 −0.43781  0.29288 HVT51 HVT52 HVT61 HVT62 HVT62/HOI HVT62/HOS 0    1.31747 0     1.69760  0.51442  0.13217 TP2/TP3 TP3/TP4 InRS61 InRS62|InRS61|/TP6 |InRS62|/TP6  0.81960  1.05219  −0.40797  −0.05910  0.70543 0.10218 IN12 IN23 IN34 IN45 IN56 0.946 mm 0.260 mm 0.050 mm 0.939 mm1.670 mm

The values stated as follows can be obtained according to table 5 andtable 6.

Values Related to Inflection Point of Third Embodiment (PrimaryReference Wavelength = 940 nm) HIF111 3.5555 HIF111/HOI 1.0774 SGI111−0.4467 |SGI111|/(|SGI111| + TP1) 0.2654 HIF121 2.9552 HIF121/HOI 0.8955SGI121 −0.5840 |SGI121|/(|SGI121| + TP1) 0.3208 HIF211 2.5690 HIF211/HOI0.7785 SGI211 −0.9403 |SGI211|/(|SGI211| + TP2) 0.4336 HIF221 2.7051HIF221/HOI 0.8197 SGI221 −0.9505 |SGI221|/(|SGI221| + TP2) 0.4363 HIF3111.4581 HIF311/HOI 0.4418 SGI311 −0.0405 |SGI311|/(|SGI311| + TP3) 0.0263HIF321 0.7738 HIF321/HOI 0.2345 SGI321 0.0061 |SGI321|/(|SGI321| + TP3)0.0041 HIF322 1.9265 HIF322/HOI 0.5838 SGI322 0.0104|SGI322|/(|SGI322| + TP3) 0.0069 HIF323 3.4178 HIF323/HOI 1.0357 SGI3230.0751 |SGI323|/(|SGI323| + TP3) 0.0477 HIF411 3.0644 HIF411/HOI 0.9286SGI411 1.6243 |SGI411|/(|SGI411| + TP4) 0.5328 HIF421 2.4357 HIF421/HOI0.7381 SGI421 1.0737 |SGI421|/(|SGI421| + TP4) 0.4299 HIF511 2.8810HIF511/HOI 0.8730 SGI511 0.9749 |SGI511|/(|SGI511| + TP5) 0.3277 HIF5123.3851 HIF512/HOI 1.0258 SGI512 1.3562 |SGI512|/(|SGI512| + TP5) 0.4041HIF521 0.8081 HIF521/HOI 0.2449 SGI521 −0.0135 |SGI521|/(|SGI521| + TP5)0.0067 HIF522 2.7532 HIF522/HOI 0.8343 SGI522 0.5681|SGI522|/(|SGI522| + TP5) 0.2212 HIF611 2.5218 HIF611/HOI 0.7642 SGI611−0.2935 |SGI611|/(|SGI611| + TP6) 0.3366 HIF612 2.6492 HIF612/HOI 0.8028SGI612 −0.3276 |SGI612|/(|SGI612| + TP6) 0.3616 HIF621 0.9687 HIF621/HOI0.2936 SGI621 0.0187 |SGI621|/(|SGI621| + TP6) 0.0314

Fourth Embodiment

Please refer to FIGS. 4A to 4C. FIG. 4A is a schematic view of theoptical image capturing system according to the fourth embodiment of thepresent invention. FIG. 4B is a curve diagram illustrating the sphericalaberration, astigmatism and optical distortion of the optical imagecapturing system in order from left to right according to the fourthembodiment of the present invention. FIG. 4C is a characteristic diagramof modulation transfer of infrared light spectrum for the optical imagecapturing system according to the fourth embodiment of the presentinvention. As shown in FIG. 4A, an optical image capturing systemincludes, in the order from the object side to the image side, a firstlens 410, an aperture 400, a second lens 420, a third lens 430, a fourthlens 440, a fifth lens 450, a sixth lens 460, an IR-cut filter 480, animage plane 490 for infrared light, and an image sensor element 492.

The first lens 410 has negative refractive power and is made of plastic.The object side 412 of the first lens 410 is a concave surface and theimage side 414 of the first lens 410 is a convex surface, and the objectside 412 and the image side 414 are aspheric. The object side 412 hasone inflection point, and the image side 414 has one inflection point.

The second lens 420 has positive refractive power and is made ofplastic. The object side 422 of the second lens 420 is a convex surfaceand the image side 424 of the second lens 420 is a convex surface, andthe object side 422 and the image side 424 are aspheric. The object side422 has one inflection point.

The third lens 430 has negative refractive power and is made of plastic.An object side 432 of the third lens 430 is a concave surface and animage side 434 of the third lens 430 is a convex surface, and the objectside 432 and the image side 434 are both aspheric. The object side 432has two inflection points.

The fourth lens 440 has positive refractive power and is made ofplastic. An object side 442 of the fourth lens 440 is a convex surfaceand an image side 444 of the fourth lens 440 is a concave surface, andthe object side 442 and the image side 444 are both aspheric. The objectside 442 has one inflection point, and the image side 444 has oneinflection point.

The fifth lens 450 has positive refractive power and is made of plastic.An object side 452 of the fifth lens 450 is a convex surface and animage side 454 of the fifth lens 450 is a convex surface, and the objectside 452 and the image side 454 are both aspheric. The object side 452has one inflection point and the image side 454 has one inflectionpoint.

The sixth lens 460 has negative refractive power and is made of plastic.An object side 462 of the sixth lens 460 is a convex surface and animage side 464 of the sixth lens 460 is a concave surface, and theobject side 462 and the image side 464 are both aspheric. The objectside 462 has one inflection point and the image side 464 has twoinflection points. Hereby, this configuration is beneficial to shortenthe back focal length of the optical image capturing system so as tokeep the optical image capturing system minimized. Furthermore, theincident angle of the off-axis rays can be effectively reduced, therebyfurther correcting the off-axis aberration.

The IR-cut filter 480 is made of glass, and disposed between the sixthlens 460 and the image plane 490, and does not affect the focal lengthof the optical image capturing system.

Please refer to table 7 and table 8

TABLE 7 Lens Parameters for the Fourth Embodiment f = 5.519 mm; f/HEP =0.900; HAF = 30.884 deg Thickness Refractive Dispersion Focal SurfaceCurvature Radius (mm) Material index coefficient length 0 Object 1E+181E+18 1 −3.937866915 0.723 2 Lens 1 −4.908985924 0.466 Plastic 1.66120.39 −43.2187 3 Aperture 1E+18 −0.041 4 Lens 2 12.83038777 1.587Plastic 1.544 56.09 10.2596 5 −9.369468102 0.523 6 Lens 3 −2.8028696611.647 Plastic 1.544 56.09 −13.3697 7 −5.518273782 0.051 8 Lens 42.79905515 1.694 Plastic 1.636 23.89 9.21497 9 4.152141218 1.749 10 Lens23.75143267 1.461 Plastic 1.636 23.89 9.25734 11 −7.522604497 0.669 12Lens 2.304576898 0.500 Plastic 1.661 20.39 −17.3989 13 1.751594301 0.75614 IR-cut filter 1E+18 0.215 BK_7 1.517 64.13 15 1E+18 1.000 16 Imageplane 1E+18 0.000 17 1E+18 0.000 Reference wavelength = 940 nm; Shieldposition: The clear aperture of the first surface is 4.500 mm. The clearaperture of the seventh surface is 4.227 mm. The clear aperture of thethirteenth surface is 3.179 mm.

Table 8 is the aspheric coefficients of the fourth embodiment

TABLE 8 Aspheric Coefficients Surface 1 3 4 5 6 7 8 k −6.969663E+00 −1.455843E+01  1.089611E+01 −8.771852E+00 −4.861907E+00 2.166921E−01−8.879591E−01 A4 1.241311E−02 1.923792E−02 8.552337E−03 −1.041222E−02−1.082072E−03 4.822054E−03 −7.444203E−03 A6 −1.376522E−03 −2.175868E−03  −4.070408E−03   2.482913E−03  1.613321E−03 −6.472117E−04  7.578004E−04 A8 6.479285E−05 2.826074E−04 1.034926E−03 −2.731003E−04−2.961102E−04 3.282688E−05 −1.079206E−04 A10 2.400101E−06 −4.629218E−05 −1.726774E−04   2.112799E−05  3.395635E−05 1.532163E−06  8.767416E−06A12 −4.698208E−07  5.522059E−06 1.681616E−05 −1.713063E−06 −2.324017E−06−2.672699E−07  −3.709301E−07 A14 2.294090E−08 −3.556002E−07 −9.230758E−07   9.482883E−08  8.516977E−08 1.339047E−08  7.241891E−09A16 −3.827857E−10  9.321811E−09 2.152569E−08 −2.136795E−09 −1.307674E−09−2.546122E−10  −4.484248E−11 A18 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00  0.000000E+00 0.000000E+00  0.000000E+00 Surface 9 10 1112 13 k −6.869961E+00  −8.998805E+01  1.534144E+00 −2.010337E+00 −1.887541E+00 A4 9.897360E−03 4.238466E−03 −5.472651E−03  −5.218653E−02 −4.841193E−02 A6 −1.360599E−03  4.823535E−04 5.092556E−03 9.247086E−03 1.094720E−02 A8 6.871040E−05 −2.285842E−04  −1.439924E−03 −1.347384E−03  −1.899082E−03 A10 −2.893877E−06  5.647977E−052.703547E−04 1.219546E−04  2.266739E−04 A12 1.485536E−07 −7.397567E−06 −3.039073E−05  −5.479416E−06  −1.731271E−05 A14 −5.303933E−09 5.091571E−07 1.904514E−06 6.825375E−08  7.777792E−07 A16 7.620834E−11−1.446630E−08  −5.001011E−08  2.163542E−09 −1.564610E−08 A180.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00  0.000000E+00

In the fourth embodiment, the aspheric surface formula is presented inthe same way in the first embodiment. In addition, the definitions ofparameters in following tables are the same as those in the firstembodiment. Therefore, similar description shall not be illustratedagain.

The values stated as follows can be obtained according to table 7 andtable 8.

Fourth embodiment (Reference wavelength = 940 nm) The exit pupildiameter of image-side surface of the sixth lens is denoted by HXP MTFE0MTFE3 MTFE7 MTFQ0 MTFQ3 MTFQ7 0.88  0.84  0.78  0.69  0.62  0.48  ETP1ETP2 ETP3 ETP4 ETP5 ETP6 1.315 0.867 1.487 1.238 0.856 1.329 ETP1/TP1ETP2/TP2 ETP3/TP3 ETP4/TP4 ETP5/TP5 ETP6/TP6 1.818 0.546 0.903 0.7310.586 2.657 ETL EBL EIN EIR PIR EIN/ETL 13.319  1.368 11.952  0.1520.756 0.897 SETP/EIN EIR/PIR SETP STP SETP/STP BL 0.593 0.202 7.0927.612 0.932 1.833 ED12 ED23 ED34 ED45 ED56 EBL/BL 0.267 0.425 2.2771.519 0.372  0.7463 SED SIN SED/SIN ED12/ED23 ED23/ED34 ED34/ED45 4.8593.417 1.422 0.629 0.187 1.499 ED12/IN1 2 ED23/IN23 ED34/IN34 ED45/IN4 5ED56/IN56 ED45/ED56 0.629 0.812 44.891  0.868 0.556 4.086 |f/f1| |f/f2||f/f3| |f/f4| |f/f5| |f/f6|  0.12771  0.53796  0.41282  0.59894  0.59620 0.31722 ΣPPR ΣNPR ΣPPR/|ΣNPR| IN12/f IN56/f TP4/(IN34 + TP4 + IN45) 1.73567  0.85518  2.02960  0.07700  0.12115  0.48484 |f1/f2| |f2/f3|(TP1 + IN12)/TP2 (TP6 + IN56)/TP5  4.21251  0.76738 0.72387 0.79968 HOSInTL HOS/HOI InS/HOS ODT % TDT %  12.86240  11.02920  3.89770  0.90754 −0.32521  0.31600 HVT51 HVT52 HVT61 HVT62 HVT62/HOI HVT62/HOS 0    2.39538  1.77451  2.72908  0.82699  0.21218 TP2/TP3 TP3/TP4 InRS61InRS62 |InRS61|/TP6 |InRS62|/TP6  0.96315  0.97251  −0.08735  0.60284 0.17470  1.20568 IN12 IN23 IN34 IN45 IN56 0.425 mm 0.523 mm 0.051 mm1.749 mm 0.669 mm

The values stated as follows can be obtained according to table 7 andtable 8.

Values Related to Inflection Point of Fourth Embodiment (PrimaryReference Wavelength = 940 nm) HIF111 1.1631 HIF111/HOI 0.3524 SGI111−0.1343 |SGI111|/(|SGI111| + TP1) 0.1566 HIF121 0.8100 HIF121/HOI 0.2455SGI121 −0.0539 |SGI121|/(|SGI121| + TP1) 0.0693 HIF211 1.9632 HIF211/HOI0.5949 SGI211 0.1824 |SGI211|/(|SGI211| + TP2) 0.1031 HIF311 1.5923HIF311/HOI 0.4825 SGI311 −0.3519 |SGI311|/(|SGI311| + TP3) 0.1760 HIF3123.6547 HIF312/HOI 1.1075 SGI312 −0.6698 |SGI312|/(|SGI312| + TP3) 0.2891HIF411 3.0631 HIF411/HOI 0.9282 SGI411 1.2987 |SGI411|/(|SGI411| + TP4)0.4340 HIF421 2.2207 HIF421/HOI 0.6729 SGI421 0.5619|SGI421|/(|SGI421| + TP4) 0.2491 HIF511 3.2155 HIF511/HOI 0.9744 SGI5110.7182 |SGI511|/(|SGI511| + TP5) 0.3295 HIF521 1.5541 HIF521/HOI 0.4709SGI521 −0.1572 |SGI521|/(|SGI521| + TP5) 0.0971 HIF611 0.8846 HIF611/HOI0.2681 SGI611 0.1359 |SGI611|/(|SGI611| + TP6) 0.2137 HIF621 1.0848HIF621/HOI 0.3287 SGI621 0.2590 |SGI621|/(|SGI621| + TP6) 0.3412 HIF6222.9049 HIF622/HOI 0.8803 SGI622 0.6041 |SGI622|/(|SGI622| + TP6) 0.5471

Fifth Embodiment

Please refer to FIGS. 5A to 5C. FIG. 5A is a schematic view of theoptical image capturing system according to the fifth embodiment of thepresent invention. FIG. 5B is a curve diagram illustrating the sphericalaberration, astigmatism and optical distortion of the optical imagecapturing system in order from left to right according to the fifthembodiment of the present invention. FIG. 5C is a characteristic diagramof modulation transfer of infrared light spectrum for the optical imagecapturing system according to the fifth embodiment of the presentinvention. As shown in FIG. 5A, an optical image capturing systemincludes, in the order from the object side to the image side, a firstlens 510, an aperture 500, a second lens 520, a third lens 530, a fourthlens 540, a fifth lens 550, a sixth lens 560, an IR-cut filter 580, animage plane 590 for infrared light, and an image sensor element 592.

The first lens 510 has negative refractive power and is made of plastic.The object side 512 of the first lens 510 is a convex surface and theimage side 514 of the first lens 510 is a concave surface, and theobject side 512 and the image side 514 are aspheric. The object side 512has one inflection point, and the image side 514 has one inflectionpoint.

The second lens 520 has negative refractive power and is made ofplastic. The object side 522 of the second lens 520 is a concave surfaceand the image side 524 of the second lens 520 is a convex surface, andthe object side 522 and the image side 524 are aspheric. The object side522 has one inflection point.

The third lens 530 has positive refractive power and is made of plastic.An object side 532 of the third lens 530 is a convex surface and animage side 534 of the third lens 530 is a concave surface, and theobject side 532 and the image side 534 are both aspheric. The objectside 532 has two inflection points.

The fourth lens 540 has negative refractive power and is made ofplastic. An object side 542 of the fourth lens 540 is a convex surfaceand an image side 544 of the fourth lens 540 is a concave surface, andthe object side 542 and the image side 544 are both aspheric. The objectside 542 has two inflection points.

The fifth lens 550 has positive refractive power and is made of plastic.An object side 552 of the fifth lens 550 is a convex surface and animage side 554 of the fifth lens 550 is a convex surface, and the objectside 552 and the image side 554 are both aspheric. The object side 552has one inflection point, and the image side 554 has one inflectionpoint.

The sixth lens 560 has negative refractive power and is made of plastic.An object side 562 of the sixth lens 560 is a concave surface and animage side 564 of the sixth lens is a convex surface, and the objectside 562 and the image side 564 are both aspheric. The object side 562has one inflection point and the image side 564 has two inflectionpoints.

The IR-cut filter 580 is made of glass, and disposed between the sixthlens 560 and the image plane 590, and does not affect the focal lengthof the optical image capturing system.

Please refer to table 9 and table 10

TABLE 9 Lens Parameters for the Fifth Embodiment f = 4.522 mm; f/HEP =0.900; HAF = 36.125 deg Thickness Refractive Dispersion Focal SurfaceCurvature Radius (mm) Material index coefficient length 0 Object 1E+181E+18 1 Lens 1 2.918997565 1.354 Plastic 1.544 56.09 −21.815 21.959071692 6.657 3 Aperture 1E+18 0.225 4 Lens 2 −19.64643378 1.304Plastic 1.544 56.09 −75.376 5 −38.76953601 0.050 6 Lens 3 4.6105651711.382 Plastic 1.584 29.89 9.884 7 21.16447886 0.050 8 Lens 4 2.6784499661.392 Plastic 1.544 56.09 −45.311 9 1.973954394 0.697 10 Lens18.64683181 1.126 Plastic 1.661 20.39 3.225 11 −2.315703079 0.289 12Lens −4.762447368 2.000 Plastic 1.661 20.39 −10.200 13 −19.518349351.008 14 IR-cut filter 1E+18 0.215 BK_7 1.517 64.13 15 1E+18 1.000 16Image plane 1E+18 0.000 Reference wavelength = 940 nm; Shield position:The clear aperture of the first surface is 4.400 mm. The clear apertureof the seventh surface is 3.353 mm. The clear aperture of the thirteenthsurface is 2.790 mm.

Table 10 is the aspheric coefficients of the fifth embodiment

TABLE 10 Aspheric Coefficients Surface 1 2 4 5 6 7 8 k −1.275092E+00−7.403754E−01  −3.498661E+01 3.741510E+01 −3.616875E+00  3.124138E+01−2.886070E+00 A4  4.642533E−03 4.991233E−03 −4.120990E−03 −1.837062E−02 7.444101E−03 2.254389E−02 −2.128325E−03 A6 −1.952056E−04 −3.387053E−04  3.518346E−03 5.556347E−03 9.075395E−05 −2.933699E−03  −1.817658E−03 A8 2.875992E−05 6.332146E−05 −1.026013E−03 −1.484944E−03  −6.788300E−04 −7.122424E−04   3.445056E−04 A10 −2.109577E−06 1.630235E−06 1.773226E−04 2.727064E−04 1.450625E−04 2.201529E−04 −1.221565E−05 A12−8.027248E−08 −3.709948E−06  −1.731433E−05 −2.879848E−05  −1.447219E−05 −2.435646E−05  −1.246849E−06 A14  9.572475E−09 3.692845E−07 9.028272E−07 1.629838E−06 7.402495E−07 1.280245E−06  9.782015E−08 A16−1.971050E−10 −1.099990E−08  −1.967182E−08 −3.853274E−08  −1.568701E−08 −2.667580E−08  −1.701189E−09 A18  0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00  0.000000E+00Surface 9 10 11 12 13 k −3.739847E+00  −8.999743E+01 −7.607959E+00−4.860651E+01 −9.000000E+01  A4 5.311735E−03 −7.850892E−03 −2.534851E−03 3.815571E−02 1.755141E−02 A6 −4.686162E−03   8.536982E−03  1.018637E−02−4.187939E−03 −3.496749E−03  A8 1.025143E−03 −2.287956E−03 −2.696109E−03−4.367907E−04 1.275265E−03 A10 −1.564739E−04   2.655727E−04 3.226481E−04  2.212842E−04 −2.492447E−04  A12 1.478364E−05−1.448777E−05 −1.903174E−05 −3.450517E−05 2.700923E−05 A14−7.404087E−07   3.205417E−07  5.035851E−07  2.590540E−06 −1.707855E−06 A16 1.502071E−08 −6.963677E−10 −4.137214E−09 −8.113306E−08 5.078612E−08A18 0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00 0.000000E+00

In the fifth embodiment, the aspheric surface formula is presented inthe same way in the first embodiment. In addition, the definitions ofparameters in following tables are the same as those in the firstembodiment. Therefore, similar description shall not be illustratedagain.

The values stated as follows can be obtained according to table 9 andtable 10.

Fifth embodiment (Reference wavelength = 940 nm) The exit pupil diameterof image-side surface of the sixth lens is denoted by HXP MTFE0 MTFE3MTFE7 MTFQ0 MTFQ3 MTFQ7 0.86  0.79  0.61  0.7  0.49  0.35  ETP1 ETP2ETP3 ETP4 ETP5 ETP6 2.165 1.027 1.051 1.360 0.643 2.031 ETP1/TP1ETP2/TP2 ETP3/TP3 ETP4/TP4 ETP5/TP5 ETP6/TP6 1.599 0.787 0.761 0.9770.571 1.015 ETL EBL EIN EIR PIR EIN/ETL 17.485  1.802 15.683  0.5861.008 0.897 SETP/EIN EIR/PIR SETP STP SETP/STP BL 0.528 0.582 8.2788.559 0.967 2.090 ED12 ED23 ED34 ED45 ED56 EBL/BL 4.755 1.023 0.5000.171 0.956  0.8622 SED SIN SED/SIN ED12/ED23 ED23/ED34 ED34/ED45 7.4057.969 0.929 4.649 2.045 2.921 ED12/IN12 ED23/IN23 ED34/IN34 ED45/IN45ED56/IN56 ED45/ED56 0.691 20.455  10.003  0.245 3.310 0.179 |f/f1||f/f2| |f/f3| |f/f4| |f/f5| |f/f6|  0.20731  0.06000  0.45754  0.09981 1.40221  0.44338 ΣPPR ΣNPR ΣPPR/|ΣNPR| IN12/f IN56/f TP4/(IN34 + TP4 +IN45)  1.70933  0.96091  1.77886  1.52175  0.06385  0.65064 |f1/f2||f2/f3| (TP1 + IN12)/TP2 (TP6 + IN56)/TP5  0.28941  7.62592 6.314762.03207 HOS InTL HOS/HOI InS/HOS ODT % TDT %  18.61720  16.52690 5.64158  0.56966  −1.08673  1.06245 HVT51 HVT52 HVT61 HVT62 HVT62/HOIHVT62/HOS 0     2.00353  0.97652  0.89437  0.27102  0.04804 TP2/TP3TP3/TP4 InRS61 InRS62 |InRS61|/TP6 |InRS62|/TP6  0.94407  0.99241 0.46931  0.52238  0.23466  0.26119 IN12 IN23 IN34 IN45 IN56 6.882 mm0.050 mm 0.050 mm 0.697 mm 0.289 mm

The values stated as follows can be obtained according to table 9 andtable 10.

Values Related to Inflection Point of Fifth Embodiment (PrimaryReference Wavelength = 940 nm) HIF111 3.2695 HIF111/HOI 0.9907 SGI1112.0680 |SGI111|/(|SGI111| + TP1) 0.6042 HIF121 2.7956 HIF121/HOI 0.8472SGI121 2.4516 |SGI121|/(|SGI121| + TP1) 0.6441 HIF211 1.2875 HIF211/HOI0.3901 SGI211 −0.0419 |SGI211|/(|SGI211| + TP2) 0.0311 HIF221 2.2188HIF221/HOI 0.6724 SGI221 −0.2406 |SGI221|/(|SGI221| + TP2) 0.1557 HIF3111.9187 HIF311/HOI 0.5814 SGI311 0.4111 |SGI311|/(|SGI311| + TP3) 0.2293HIF321 1.7163 HIF321/HOI 0.5201 SGI321 0.1760 |SGI321|/(|SGI321| + TP3)0.1130 HIF322 3.2114 HIF322/HOI 0.9732 SGI322 0.2971|SGI322|/(|SGI322| + TP3) 0.1770 HIF411 1.6720 HIF411/HOI 0.5067 SGI4110.4126 |SGI411|/(|SGI411| + TP4) 0.2286 HIF412 1.9802 HIF412/HOI 0.6001SGI412 0.5283 |SGI412|/(|SGI412| + TP4) 0.2751 HIF413 3.0608 HIF413/HOI0.9275 SGI413 0.9891 |SGI413|/(|SGI413| + TP4) 0.4154 HIF421 1.3937HIF421/HOI 0.4223 SGI421 0.3844 |SGI421|/(|SGI421| + TP4) 0.2164 HIF5111.9069 HIF511/HOI 0.5778 SGI511 0.1263 |SGI511|/(|SGI511| + TP5) 0.1008HIF512 2.6997 HIF512/HOI 0.8181 SGI512 0.2120 |SGI512|/(|SGI512| + TP5)0.1584 HIF521 0.9685 HIF521/HOI 0.2935 SGI521 −0.1598|SGI521|/(|SGI521| + TP5) 0.1242 HIF611 0.5083 HIF611/HOI 0.1540 SGI611−0.0217 |SGI611|/(|SGI611| + TP6) 0.0107 HIF612 2.3690 HIF612/HOI 0.7179SGI612 0.2989 |SGI612|/(|SGI612| + TP6) 0.1300 HIF621 0.4996 HIF621/HOI0.1514 SGI621 −0.0053 |SGI621|/(|SGI621| + TP6) 0.0026

Sixth Embodiment

Please refer to FIGS. 6A to 6C. FIG. 6A is a schematic view of theoptical image capturing system according to the sixth embodiment of thepresent invention. FIG. 6B is a curve diagram illustrating the sphericalaberration, astigmatism and optical distortion of the optical imagecapturing system in order from left to right according to the sixthembodiment of the present invention. FIG. 6C is a characteristic diagramof modulation transfer of infrared light spectrum for the optical imagecapturing system according to the sixth embodiment of the presentinvention. As shown in FIG. 6A, an optical image capturing systemincludes, in the order from the object side to the image side, a firstlens 610, a second lens 620, an aperture 600, a third lens 630, a fourthlens 640, a fifth lens 650, a sixth lens 660, an IR-cut filter 680, animage plane 690 for infrared light, and an image sensor element 692.

The first lens 610 has negative refractive power and is made of plastic.The object side 612 of the first lens 610 is a concave surface and theimage side 614 of the first lens 610 is a convex surface, and the objectside 612 and the image side 614 are aspheric. The object side 612 hasone inflection point, and the image side 614 has one inflection point.

The second lens 620 has positive refractive power and is made ofplastic. The object side 622 of the second lens 620 is a convex surfaceand the image side 624 of the second lens 620 is a convex surface, andthe object side 622 and the image side 624 are aspheric. The object side622 has two inflection points, and the image side 624 has one inflectionpoint.

The third lens 630 has negative refractive power and is made of plastic.An object side 632 of the third lens 630 is a concave surface and animage side 634 of the third lens 630 is a convex surface, and the objectside 632 and the image side 634 are both aspheric. The object side 632has one inflection point.

The fourth lens 640 has positive refractive power and is made ofplastic. An object side 642 of the fourth lens 640 is a convex surfaceand an image side 644 of the fourth lens 640 is a concave surface, andthe object side 642 and the image side 644 are both aspheric. The objectside 642 has one inflection point, and the image side 644 has oneinflection point.

The fifth lens 650 has positive refractive power and is made of plastic.An object side 652 of the fifth lens 650 is a convex surface and animage side 654 of the fifth lens 650 is a convex surface, and the objectside 652 and the image side 654 are both aspheric. The object side 652has three inflection points and the image side 654 has one inflectionpoint.

The sixth lens 660 has negative refractive power and is made of plastic.An object side 662 of the sixth lens 660 is a convex surface and animage side 664 of the sixth lens 660 is a concave surface, and theobject side 662 and the image side 664 are both aspheric. The objectside 662 has two inflection points and the image side 664 has oneinflection point. Hereby, this configuration is beneficial to shortenthe back focal length of the optical image capturing system so as tokeep the optical image capturing system minimized. Furthermore, theincident angle of the off-axis rays can be effectively reduced, therebyfurther correcting the off-axis aberration.

The IR-cut filter 680 is made of glass, and disposed between the sixthlens 660 and the image plane 690, and does not affect the focal lengthof the optical image capturing system.

Please refer to table 11 and table 12

TABLE 11 Lens Parameters for the Sixth Embodiment f = 2.958 mm; f/HEP =1.3; HAF = 46.473 deg Thickness Refractive Dispersion Focal SurfaceCurvature Radius (mm) Material index coefficient length 0 Object 1E+181E+18 1 Lens 1 −4.778122093 0.574 Plastic 1.515 56.550 −12.258 2−20.30540012 1.514 3 Lens 2 13.68643365 0.522 Plastic 1.661 20.361 7.7294 −8.140069207 0.518 5 Aperture 1E+18 0.224 6 Lens 3 −4.043733904 0.682Plastic 1.584 29.878 −8.615 7 −21.38167424 0.025 8 Lens 4 1.9473323440.724 Plastic 1.661 20.361 4.198 9 5.447128864 0.659 10 Lens 308.51514180.657 Plastic 1.661 20.361 7.024 11 −4.752049977 0.802 12 Lens2.06513071 0.533 Plastic 1.661 20.361 −16.036 13 1.552109778 0.399 14IR-cut filter 1E+18 0.215 BK_7 1.517 64.13 15 1E+18 0.750 16 Image plane1E+18 0.000 Reference wavelength = 940 nm;

Table 12 is the aspheric coefficients of the sixth embodiment

TABLE 12 Aspheric Coefficients Surface 1 2 3 4 6 7 8 k −1.932350E+01 −8.795381E−11 −1.339115E−08 −1.860006E−16 −3.940199E+01  −2.024047E−09−5.567190E−01 A4 5.441288E−02  7.763323E−02 −2.077136E−02 −1.194118E−035.464584E−02 −1.662518E−02 −9.263937E−02 A6 −1.463470E−02  −6.900056E−03 1.099115E−02  7.235714E−03 −2.476914E−02   2.139731E−03  6.033064E−02A8 3.318055E−03 −5.737079E−03 −1.756699E−02 −1.598910E−02 7.141143E−03−2.333704E−03 −5.303441E−02 A10 −5.150632E−04   3.655718E−03 9.246463E−03  1.202495E−02 5.329923E−03  1.936731E−03  2.830659E−02 A125.188912E−05 −9.241939E−04 −2.142049E−03 −4.299524E−03 −5.723602E−03 −1.121521E−03 −9.735852E−03 A14 −3.086854E−06   1.081532E−04 2.362891E−04  8.226381E−04 1.950489E−03  3.280029E−04  1.833919E−03 A168.555478E−08 −4.804939E−06 −1.023662E−05 −6.393218E−05 −2.424491E−04 −4.106117E−05 −1.347107E−04 A18 0.000000E+00  0.000000E+00  0.000000E+00 0.000000E+00 0.000000E+00  0.000000E+00  0.000000E+00 Surface 9 10 1112 13 k −2.396111E+01  −9.000000E+01  −1.248902E+00 −5.984900E+00−1.234090E+00 A4 1.903889E−02 −2.467762E−02  −5.380630E−02 −9.800732E−02−1.691635E−01 A6 −2.620294E−02  7.778569E−03  3.723336E−02 −7.952685E−03 5.834099E−02 A8 1.984446E−02 6.368310E−03 −7.709948E−03  1.989718E−02−1.625619E−02 A10 −1.787847E−02  −1.075954E−02  −5.007019E−03−9.649540E−03  3.026395E−03 A12 8.307480E−03 5.237243E−03  3.818504E−03 2.204722E−03 −3.675353E−04 A14 −1.869723E−03  −1.051592E−03 −8.891963E−04 −2.401215E−04  2.664175E−05 A16 1.695027E−04 7.458111E−05 6.999627E−05  1.021040E−05 −8.639928E−07 A18 0.000000E+00 0.000000E+00 0.000000E+00  0.000000E+00  0.000000E+00

In the sixth embodiment, the aspheric surface formula is presented inthe same way in the first embodiment. In addition, the definitions ofparameters in following tables are the same as those in the firstembodiment. Therefore, similar description shall not be illustratedagain.

The values stated as follows can be obtained according to table 11 andtable 12.

Sixth embodiment (Reference wavelength = 940 nm) MTFE0 MTFE3 MTFE7 MTFQ0MTFQ3 MTFQ7 0.88  0.62  0.2  0.7  0.3  0.12  ETP1 ETP2 ETP3 ETP4 ETP5ETP6 0.717 0.420 0.653 0.560 0.491 0.677 ETP1/TP1 ETP2/TP2 ETP3/TP3ETP4/TP4 ETP5/TP5 ETP6/TP6 1.249 0.803 0.958 0.774 0.748 1.270 ETL EBLEIN EIR PIR EIN/ETL 8.840 1.145 7.696 0.179 0.399 0.871 SETP/EIN EIR/PIRSETP STP SETP/STP BL 0.457 0.450 3.519 3.693 0.953 1.161 ED12 ED23 ED34ED45 ED56 EBL/BL 1.418 0.797 0.356 0.529 1.076  1.1631 SED SIN SED/SINED12/ED23 ED23/ED34 ED34/ED45 4.177 3.743 1.116 1.778 2.239 0.673ED12/IN12 ED23/IN23 ED34/IN34 ED45/IN45 ED56/IN56 ED45/ED56 0.936 1.07514.245  0.803 1.341 0.492 |f/f1| |f/f2| |f/f3| |f/f4| |f/f5| |f/f6| 0.24135  0.38278  0.34342  0.70473  0.42116  0.18448 ΣPPR ΣNPRΣPPR/|ΣNPR| IN12/f IN56/f TP4/(IN34 + TP4 + IN45)  1.36725  0.91068 1.50135  0.51188  0.27122  0.51424 |f1/f2| |f2/f3| (TP1 + IN12)/TP2(TP6 + IN56)/TP5  1.58597  0.89716 3.99985 2.03168 HOS InTL HOS/HOIInS/HOS ODT % TDT %  8.59672  7.43567  2.60507  0.63601  6.01101 1.08488 HVT51 HVT52 HVT61 HVT62 HVT62/HOI HVT62/HOS   0.182725  1.84489 0.96642  1.33837  0.40557  0.15568 TP2/TP3 TP3/TP4 InRS61 InRS62|InRS61|/TP6 |InRS62|/TP6  0.76580  0.94196  −0.73879  −0.69863  1.38584 1.31051 IN12 IN23 IN34 IN45 IN56 1.514 mm 0.742 mm 0.025 mm 0.659 mm0.802 mm

The values stated as follows can be obtained according to table 11 andtable 12.

Values Related to Inflection Point of Sixth Embodiment (PrimaryReference Wavelength = 940 nm) HIF111 0.5325 HIF111/HOI 0.1614 SGI111−0.0241 |SGI111|/(|SGI111| + TP1) 0.0403 HIF121 0.2315 HIF121/HOI 0.0702SGI121 −0.0011 |SGI121|/(|SGI121| + TP1) 0.0019 HIF211 0.5758 HIF211/HOI0.1745 SGI211 0.0101 |SGI211|/(|SGI211| + TP2) 0.0189 HIF212 1.5657HIF212/HOI 0.4745 SGI212 −0.0414 |SGI212|/(|SGI212| + TP2) 0.0735 HIF2211.2790 HIF221/HOI 0.3876 SGI221 −0.1061 |SGI221|/(|SGI221| + TP2) 0.1689HIF311 0.4980 HIF311/HOI 0.1509 SGI311 −0.0241 |SGI311|/(|SGI311| + TP3)0.0342 HIF411 0.9341 HIF411/HOI 0.2831 SGI411 0.1795|SGI411|/(|SGI411| + TP4) 0.1987 HIF421 0.8515 HIF421/HOI 0.2580 SGI4210.0621 |SGI421|/(|SGI421| + TP4) 0.0790 HIF511 0.1051 HIF511/HOI 0.0319SGI511 0.0000 |SGI511|/(|SGI511| + TP5) 0.0000 HIF512 1.4898 HIF512/HOI0.4515 SGI512 −0.0669 |SGI512|/(|SGI512| + TP5) 0.0924 HIF513 1.7356HIF513/HOI 0.5260 SGI513 −0.0989 |SGI513|/(|SGI513| + TP5) 0.1308 HIF5211.3148 HIF521/HOI 0.3984 SGI521 −0.2291 |SGI521|/(|SGI521| + TP5) 0.2585HIF611 0.5219 HIF611/HOI 0.1582 SGI611 0.0541 |SGI611|/(|SGI611| + TP6)0.0921 HIF612 2.0351 HIF612/HOI 0.6167 SGI612 −0.5717|SGI612|/(|SGI612| + TP6) 0.5175 HIF621 0.6504 HIF621/HOI 0.1971 SGI6210.1086 |SGI621|/(|SGI621| + TP6) 0.1692

The above description is merely illustrative rather than restrictive.Any equivalent modification or alteration without departing from thespirit and scope of the present invention should be included in theappended claims.

What is claimed is:
 1. An optical image capturing system, from an objectside to an image side, comprising: a first lens with refractive power; asecond lens with refractive power; a third lens with refractive power; afourth lens with refractive power; a fifth lens with refractive power; asixth lens with refractive power; and an image plane for infrared light;wherein the optical image capturing system comprises the six lenses withrefractive power, a maximum height for image formation on the imageplane perpendicular to an optical axis in the optical image capturingsystem is HOI, at least one lens among the first lens to the sixth lenshas positive refractive power, focal lengths of the first lens throughthe sixth lens are f1, f2, f3, f4, f5 and f6, respectively, and a focallength of the optical image capturing system is f, the entrance pupildiameter of the optical image capturing system is denoted by HEP, theexit pupil diameter of image side of the sixth lens is denoted by HXP, adistance on an optical axis from an object side of the first lens to theimage plane is denoted by HOS, a distance on an optical axis from theobject side of the first lens to the image side of the sixth lens isdenoted by InTL, a half maximum angle of view of the optical imagecapturing system is denoted by HAF, thicknesses of the first lens to thesixth lens at height of ½ HXP parallel to the optical axis arerespectively denoted by ETP1, ETP2, ETP3, ETP4, ETP5 and ETP6, a sum ofETP1 to ETP6 described above is denoted by SETP, thicknesses of thefirst lens to the sixth lens on the optical axis are respectivelydenoted by TP1, TP2, TP3, TP4, TP5 and TP6, a sum of TP1 to TP6described above is denoted by STP, and the following conditions aresatisfied:0.5≤f/HEP≤1.8; 0 deg; and 0.2≤SETP/STP<1.
 2. The optical image capturingsystem according to claim 1, wherein a wavelength of the infrared lightranges from 700 nm to 1300 nm, and a first spatial frequency is denotedby SP1, and the following condition is satisfied:SP1≤440 cycles/mm.
 3. The optical image capturing system according toclaim 1, wherein a wavelength of the infrared light ranges from 850 nmto 960 nm, and a first spatial frequency is denoted by SP1, and thefollowing condition is satisfied:SP1≤220 cycles/mm.
 4. The optical image capturing system according toclaim 3, wherein a horizontal distance parallel to the optical axis froma first coordinate point on the object side of the first lens at heightof ½ HEP to the image plane is denoted by ETL, a horizontal distanceparallel to the optical axis from the first coordinate point on theobject side of the first lens at height of ½ HEP to a second coordinatepoint on the image side of the sixth lens at height of ½ HEP is denotedby EIN, and the following conditions are satisfied:0.2≤EIN/ETL<1.
 5. The optical image capturing system according to claim1, wherein a horizontal distance parallel to the optical axis from thefirst coordinate point on the object side of the first lens at height of½ HEP to a second coordinate point on the image side of the sixth lensat height of ½ HEP is denoted by EIN, and the following condition issatisfied:0.2≤SETP/EIN<1.
 6. The optical image capturing system according to claim1, wherein a distance between the first lens and the second lens on theoptical axis is denoted by IN12, a distance between the third lens andthe fourth lens on the optical axis is denoted by IN34, and thefollowing condition is satisfied:IN12>IN34
 7. The optical image capturing system according to claim 1,wherein a distance between the fourth lens and the fifth lens on theoptical axis is denoted by IN45 , a distance between the fifth lens andthe sixth lens on the optical axis is denoted by IN56, and the followingcondition is satisfied:IN56>IN45.
 8. The optical image capturing system according to claim 1,wherein a distance between the third lens and the fourth lens on theoptical axis is denoted by IN34, a distance between the fourth lens andthe fifth lens on the optical axis is denoted by IN45, and the followingcondition is satisfied:IN45>IN34.
 9. The optical image capturing system according to claim 1,wherein a distance from the aperture to the image plane on the opticalaxis is denoted by InS, and the following condition is satisfied:0.2≤InS/HOS≤1.1
 10. An optical image capturing system, from an objectside to an image side, comprising: a first lens with refractive power; asecond lens with refractive power; a third lens with refractive power; afourth lens with refractive power; a fifth lens with refractive power; asixth lens with refractive power; and an image plane for infrared light;wherein the optical image capturing system comprises the six lenses withrefractive power, at least one surface of at least one of the six lenseshas at least one inflection point, a maximum height for image formationon the image plane perpendicular to an optical axis in the optical imagecapturing system is HOI, at least one lens among the first lens to thesixth lens has positive refractive power, focal lengths of the firstlens through the sixth lens are f1, f2, f3, f4, f5 and f6, respectively,and a focal length of the optical image capturing system is f, theentrance pupil diameter of the optical image capturing system is denotedby HEP, the exit pupil diameter of image side of the sixth lens isdenoted by HXP, a distance on the optical axis from an object side ofthe first lens to the image plane is denoted by HOS, a distance on theoptical axis from the object side of the first lens to the image side ofthe sixth lens is denoted by InTL, a half maximum angle of view of theoptical image capturing system is denoted by HAF, a horizontal distanceparallel to the optical axis from a first coordinate point on the objectside of the first lens at height of ½ HXP to the image plane is denotedby ETL, a horizontal distance parallel to the optical axis from thefirst coordinate point on the object side of the first lens at height of½ HXP to a second coordinate point on the image side of the sixth lensat height of ½ HXP is denoted by EIN, and the following conditions aresatisfied:0.5≤f/HEP≤1.5; 0 deg<HAF≤50 deg; and 0.2≤EIN/ETL<1.
 11. The opticalimage capturing system according to claim 10, wherein the contrasttransfer rates (MTF values) with spatial frequencies of 110 cycles/mm atthe optical axis, 0.3 HOI, and 0.7 HOT of infrared light spectrum on theimage plane may be respectively denoted by MTFQ0, MTFQ3 and MTFQ7, andthe following conditions are satisfied:MTFQ0≥0.01; MTFQ3≥0.01; and MTFQ7≥0.01.
 12. The optical image capturingsystem according to claim 10, wherein a maximum height for imageformation on the image plane perpendicular to the optical axis in theoptical image capturing system is HOI, and the following condition issatisfied:0.5≤HOS/HOI≤6.
 13. The optical image capturing system according to claim10, further comprising an aperture stop, wherein the aperture stop is infront of an image side of the third lens.
 14. The optical imagecapturing system according to claim 10, wherein an image-side surface ofthe second lens on the optical axis is a convex surface.
 15. The opticalimage capturing system according to claim 10, wherein an object-sidesurface of the fifth lens on the optical axis is a convex surface. 16.The optical image capturing system according to claim 10, wherein anobject-side surface of the fourth lens on the optical axis is a convexsurface, and an image-side surface of the fourth lens on the opticalaxis is a convex surface.
 17. The optical image capturing systemaccording to claim 10, wherein an image-side surface of the fourth lenson the optical axis is a convex surface.
 18. The optical image capturingsystem according to claim 10, wherein each of the first lens to thesixth lens is made of plastic.
 19. The optical image capturing systemaccording to claim 10, wherein the following condition is satisfied:0.5≤f/HEP≤1.4.
 20. An optical image capturing system, from an objectside to an image side, comprising: a first lens with refractive power; asecond lens with refractive power; a third lens with refractive power; afourth lens with refractive power; a fifth lens with refractive power; asixth lens with refractive power; and an image plane for infrared light;wherein the optical image capturing system comprises the six lenses withrefractive power, at least one surface of each of at least two lenses ofthe six lenses has at least one inflection point, a maximum height forimage formation on the image plane perpendicular to an optical axis inthe optical image capturing system is HOI, focal lengths of the firstlens through the sixth lens are f1, f2, f3, f4, f5 and f6, respectively,and a focal length of the optical image capturing system is f, theentrance pupil diameter of the optical image capturing system is denotedby HEP, the exit pupil diameter of image side of the sixth lens isdenoted by HXP, a half maximum angle of view of the optical imagecapturing system is denoted by HAF, a distance on an optical axis froman object side of the first lens to the image plane is denoted by HOS, adistance on the optical axis from the object side of the first lens tothe image side of the sixth lens is denoted by InTL, thicknesses of thefirst lens to the sixth lens at height of ½ HEP parallel to the opticalaxis are respectively denoted by ETP1, ETP2, ETP3, ETP4, ETP5 and ETP6,a sum of ETP1 to ETP6 described above is denoted by SETP, thicknesses ofthe first lens to the sixth lens on the optical axis are respectivelydenoted by TP1, TP2, TP3, TP4, TP5 and TP6, a sum of TP1 to TP6described above is denoted by STP, and the following conditions aresatisfied:0.5≤f/HEP≤1.3; 0 deg<HAF≤45 deg; and 0.2≤SETP/STP<1.
 21. The opticalimage capturing system according to claim 20, wherein the followingcondition is satisfied:0 mm<HOS≤20 mm.
 22. The optical image capturing system according toclaim 20, wherein a wavelength of the infrared light ranges from 850 nmto 960 nm, and a first spatial frequency is denoted by SP1, and thefollowing condition is satisfied:SP1≤220 cycles/min
 23. The optical image capturing system according toclaim 20, wherein each of the first lens to the fifth lens is made ofplastic.
 24. The optical image capturing system according to claim 20,wherein a distance between the first lens and the second lens on theoptical axis is denoted by IN12, a distance between the second lens andthe third lens on the optical axis is denoted by IN23 , a distancebetween the third lens and the fourth lens on the optical axis isdenoted by IN34, a distance between the fourth lens and the fifth lenson the optical axis is denoted by IN45 , a distance between the fifthlens and the sixth lens on the optical axis is denoted by IN56, and thefollowing conditions are satisfied:IN12>IN34; IN45>IN34; and IN56>IN34.
 25. The optical image capturingsystem according to claim 20, further comprising an aperture and animage sensor, wherein the image sensing device is disposed on the imageplane and comprises at least 100 thousand pixels, a distance on theoptical axis from the aperture stop to the image plane is denoted byInS, and the following condition is satisfied:0.2InS/HOS≤1.1.